Posts Tagged method

Class to Simplify and Minimize Code for Stored Procedures and TSQL

First of all if you are using TSQL in your code you really need to get in a another line of work. It isn’t scalable, difficult to maintain and is generally a bad practice. But I know some of you still do it so I did include it. This class will allow you to in a few lines of code do your select, update, insert or delete statements in a very few lines of code. All that is required of the developer is to list the values in order (if you are using stored procedures) that are required. Also included is how to declare a new instance of a sqlparametercollection – which you aren’t suppose to be able to do. I ended up not needing it but included it just in case someone needs to do that someday. Also if you are using a strongly typed dataset there is a method included of how to do that. After the code is example of usage. Have a great day!

using System;
using System.Collections;
using System.Collections.Generic;
using System.Data;

using System.IO;

using System.Data.SqlClient;

public class clsData
{

    public SqlConnection sqlconn = new SqlConnection();
    public string Error_Message;
    public List<SqlParameter> ParamList = new List<SqlParameter>();
    public ArrayList ParamValues = new ArrayList();

    public int SQLExecuteNonQueryValue;
    public clsData()
   

    public enum SQLAction
    {
        SelectAction,
        UpdateInsertDeleteAction
    }

    public virtual DataTable DataAction(clsData.SQLAction Action, DataTable dt, string cmdtext, string ParamValues = “”)
    {
        SQLExecuteNonQueryValue = -1;
        SqlCommand cmd = new SqlCommand();
        cmd.CommandText = cmdtext;
        cmd.CommandType = CommandType.StoredProcedure;
        cmd.Connection = sqlconn;
        this.GetParameterList(cmdtext);
        if (!string.IsNullOrEmpty(Error_Message)) {
            return null;
        }
        if (!string.IsNullOrEmpty(ParamValues)) {
            this.ParseSQLParameterValues(ParamValues);
            for (i = 0; i <= this.ParamList.Count – 1; i++) {
                cmd.Parameters.AddWithValue(this.ParamList[i].ToString(), this.ParamValues[i].ToString());
            }
        }
        //Debug.WriteLine(cmd.CommandText)
        try {
            cmd.Connection.Open();
            switch (Action) {
                case SQLAction.SelectAction:
                    dt.Load(cmd.ExecuteReader());
                    break;
                case SQLAction.UpdateInsertDeleteAction:
                    //Check this value to make sure everything went ok
                    SQLExecuteNonQueryValue = cmd.ExecuteNonQuery();
                    cmd.Connection.Close();
                    return null;
            }
            cmd.Connection.Close();

        } catch (Exception ex) {
            Error_Message = “There was a problem with ” + cmdtext + “. “;
            return null;
        }

        //removing duplicate table from dataset
        for (i = 0; i <= ds_Copy.Tables.Count – 1; i++) {
            if (ds_Copy.Tables(i).TableName == dt.TableName) {
                ds_Copy.Tables(i).Clear();
                ds_Copy.Tables(i).Columns.Clear();
            }
        }

        //placing datatable in the dataset
        ds_Copy.Merge(dt, false, MissingSchemaAction.Add);
        Error_Message = “”;
        return dt;
    }

    public DataTable DataActionTSQL(clsData.SQLAction Action, DataTable dt, string sqlstring)
    {
        SQLExecuteNonQueryValue = -1;
        SqlCommand cmd = new SqlCommand();
        cmd.CommandText = sqlstring;
        cmd.Connection = sqlconn;
        try {
            cmd.Connection.Open();
            switch (Action) {
                case SQLAction.SelectAction:
                    dt.Load(cmd.ExecuteReader());
                    break;
                case SQLAction.UpdateInsertDeleteAction:
                    //Check this value to make sure everything went ok
                    SQLExecuteNonQueryValue = cmd.ExecuteNonQuery();
                    cmd.Connection.Close();
                    return null;
            }
            cmd.Connection.Close();

        } catch (Exception ex) {
            Error_Message = “There was a problem with ” + sqlstring + “. “;
            return null;
        }
        //removing duplicate table from dataset
        for (i = 0; i <= ds_Copy.Tables.Count – 1; i++) {
            if (ds_Copy.Tables(i).TableName == dt.TableName) {
                ds_Copy.Tables(i).Clear();
                ds_Copy.Tables(i).Columns.Clear();
            }
        }
        //placing datatable in the dataset
        ds_Copy.Merge(dt, false, MissingSchemaAction.Add);
        Error_Message = “”;
        return dt;
    }

    private List<SqlParameter> GetParameterList(string ProcName)
    {
        //Get the parameters for the selected stored procedure
        List<SqlParameter> inputParamList = new List<SqlParameter>();
        ParamList.Clear();

        using (SqlConnection cn = new SqlConnection()) {
            DispatcherTool.My.MySettings Settings = new DispatcherTool.My.MySettings();
            cn.ConnectionString = Settings.SRAConnectionString;
            SqlCommand myCommand = new SqlCommand();
            myCommand.Connection = cn;
            myCommand.CommandText = ProcName;
            myCommand.CommandType = System.Data.CommandType.StoredProcedure;
            try {
                cn.Open();
                SqlCommandBuilder.DeriveParameters(myCommand);
                cn.Close();
            } catch (Exception ex) {
                Error_Message = “There was a problem with the connection to the database.”;
                return null;
            }

            //Dim sqlparams As SqlParameterCollection = DirectCast(GetType(SqlParameterCollection).GetConstructor(BindingFlags.NonPublic Or BindingFlags.Instance, Nothing, Type.EmptyTypes, Nothing).Invoke(Nothing), SqlParameterCollection)

            foreach (SqlParameter param in myCommand.Parameters) {
                if (param.Direction == System.Data.ParameterDirection.Input || param.Direction == System.Data.ParameterDirection.InputOutput) {
                    //sqlparams.Add(param.ParameterName & ” – ” & param.SqlDbType.ToString())
                    //Debug.WriteLine(param.ParameterName & ” – ” & param.SqlDbType.ToString())
                    inputParamList.Add(param);
                    //Else
                    // sqlparams.Add(param.ParameterName & ” – ” & param.SqlDbType)
                    //Debug.WriteLine(param.ParameterName & ” -2 ” & param.SqlDbType)
                }
            }
        }
        this.ParamList = inputParamList;
        Error_Message = “”;
        return this.ParamList;
    }

    public void ParseSQLParameterValues(string ValueString)
    {
        ParamValues.Clear();
        string[] parts = ValueString.Split(new char[] { ‘,’ });
        string part = null;
        foreach (string part_loopVariable in parts) {
            part = part_loopVariable;
            ParamValues.Add(part);
        }
    }

    //’Public Shared Function ConvertToTypedDataTable(Of T As {Data.DataTable, New})(ByVal dtBase As Data.DataTable) As T
    //’    Dim dtTyped As New T
    //’    dtTyped.Merge(dtBase)
    //’    Return dtTyped
    //’End Function

}

And then it’s use…..

private void Button1_Click(System.Object sender, System.EventArgs e)
{
    Strongly_Typed_DataSet.usp_Your_Stored_Procedure dt = new Strongly_Typed_DataSet.usp_Your_Stored_Procedure();

    DataGridView1.DataSource = cn.DataAction(clsData.SQLAction.SelectAction, dt, ds.usp_Get_PrinterName_for_PickList_Printing.ToString, “Tubing”);

    //DataGridView1.DataSource = cn.DataActionTSQL(clsData.SQLAction.SelectAction, dt, “SELECT *FROM Your_Table”)

}


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WCF and Email Attachments

First off I want to apologize for being away so long. It has been a crazy ride to say the least.

So a colleague of mine ran into an issue with WCF and emailing attachments and asked for help. In this block of code below it would always fail at:

Attachment attachment = new Attachment(fileAttachment.ContentStream, fileAttachment.Name);”     The error is : “Value cannot be null.
Parameter name: stream”

 

 

 
EmailSendInput emailSendInput = new EmailSendInput
                {
                    Attachments = new List<Attachment>(),
                    Body = model.Body,
                    To = new List<string> { model.EmailTo },
                    From = model.EmailFrom,
                    Subject = model.EmailSubject
                };

                if (model.Files != null)
                {
                    foreach (var currAttachment in model.Files)
                    {
                        if (currAttachment != null && currAttachment.ContentLength > 0)
                        {
                            // the filename needs to be nice looking
                            string fileName =
                                currAttachment.FileName.Substring(
                                    currAttachment.FileName.LastIndexOf(@”\”, System.StringComparison.Ordinal) + 1,
                                    currAttachment.FileName.Length
                                    – currAttachment.FileName.LastIndexOf(@”\”, System.StringComparison.Ordinal) – 1);

                            var attachment = new Attachment(currAttachment.InputStream, fileName);
                            emailSendInput.Attachments.Add(attachment);
                        }
                    }
                }

                B2BMortgageDataServiceAgent b2BMortgageDataServiceAgent = new B2BMortgageDataServiceAgent();
                EmailSendResponse emailSendResponse = b2BMortgageDataServiceAgent.SendEmail(emailSendInput);
                if (!emailSendResponse.Success)
                {
                    throw new Exception(emailSendResponse.Message);
                }
            }

public EmailSendResponse SendEmail(EmailSendInput input)
        {
            EmailSendResponse retVal = new EmailSendResponse();
            try
            {
               
                string smtpServer = “”
                string smtpPort = “”

                using (var client = new SmtpClient(smtpServer, Convert.ToInt32(smtpPort)))
                {
                    var mail = new MailMessage
                    {
                        From = new MailAddress(input.From),
                        Subject = input.Subject,
                        Body = input.Body
                    };
                    input.To.ForEach(t => mail.To.Add(t));

                    if (input.Attachments != null && input.Attachments.Count > 0)
                    {
                        foreach (var fileAttachment in input.Attachments)
                        {
                            //Code Crashes here
                            Attachment attachment = new Attachment(fileAttachment.ContentStream, fileAttachment.Name);
                            mail.Attachments.Add(attachment);
                        }
                    }

                    client.Send(mail);
                }

                retVal.Success = true;
            }
            catch (Exception exception)
            {
                retVal.Success = false;
                LogUtil.LogException(exception);

            
                retVal.Message = exception.ToString();
            }

            return retVal;
        }

and then the contract:

[DataContract]
    public class EmailSendInput
    {
        [DataMember]
        public string From { get; set; }

        [DataMember]
        public List<string> To { get; set; }

        [DataMember]
        public string Subject { get; set; }

        [DataMember]
        public string Body { get; set; }

        [DataMember]
        public List<Attachment> Attachments { get; set; }

    }

Implemented as:

public EmailSendResponse SendEmail(EmailSendInput input)
         {
             try
             {
                 return this.dataAgent.SendEmail(input);
             }
             catch (Exception e)
             {
                 this.logger.LogException(e, 2);
                 throw new FaultException(“An error occured in SendEmail. Error details : ” + this.BuildMessage(e));
             } 
         }

and the Email response:

[DataContract]
    public class EmailSendResponse
    {
        [DataMember]
        public bool Success { get; set; }

        [DataMember]
        public string Message { get; set; }
    }

So now we have the problem. I basically had to recreate his datamember for attachment in the contract EmailSendInput to a

public List<EmailEncodedAttachment> Attachments { get; set; }

and added a new contract called EmailEncodedAttachment and process how he was handling the attachment differently. I’ve also included the MVC controller calls in case it might help you as well.

 

SOLUTION:

[DataContract]
    public class EmailSendInput
    {
        [DataMember]
        public string From { get; set; }

        [DataMember]
        public List<string> To { get; set; }

        [DataMember]
        public string Subject { get; set; }

        [DataMember]
        public string Body { get; set; }

        [DataMember]
        public List<EmailEncodedAttachment> Attachments { get; set; }

    }

 

[DataContract]
    public class EmailEncodedAttachment
    {
        [DataMember]
        public string Base64Attachment;

        [DataMember]
        public string Name;

        /// <summary>
        /// One of the System.Net.Mime.MediaTypeNames
        /// </summary>
        [DataMember]
        public string MediaType;
    }
}
                retVal.Message = exception.ToString();
            }

            return retVal;
        }

 

public EmailSendResponse SendEmail(EmailSendInput input)
        {
            EmailSendResponse retVal = new EmailSendResponse();
            try
            {
               
                string smtpServer = ConfigurationManager.AppSettings[“SmtpServer”] ?? “url”;
                string smtpPort = ConfigurationManager.AppSettings[“SmtpPort”] ?? “portnum”;

                using (var client = new SmtpClient(smtpServer, Convert.ToInt32(smtpPort)))
                {
                    var mail = new MailMessage
                    {
                        From = new MailAddress(input.From),
                        Subject = input.Subject,
                        Body = input.Body
                    };
                    input.To.ForEach(t => mail.To.Add(t));

                    if (input.Attachments != null && input.Attachments.Count > 0)
                    {
                        foreach (var fileAttachment in input.Attachments)
                        {
                            mail.Attachments.Add(this.CreateAttachment(fileAttachment));
                        }
                    }

                    client.Send(mail);
                }

                retVal.Success = true;
            }
            catch (Exception exception)
            {
                retVal.Success = false;
                LogUtil.LogException(exception);
             
                retVal.Message = exception.ToString();
            }

            return retVal;
        }

 

The MVC controller action calls the service like so:

EmailSendInput emailSendInput = new EmailSendInput
                {
                    Attachments = new List<EmailEncodedAttachment>(),
                    Body = model.Body,
                    To = new List<string> { model.EmailTo },
                    From = model.EmailFrom,
                    Subject = model.EmailSubject
                };

                if (model.Files != null)
                {
                    foreach (var file in model.Files)
                    {
                        if (file != null && file.ContentLength > 0)
                        {
                            // the filename needs to be nice looking
                            string prettyFileName =
                                file.FileName.Substring(
                                    file.FileName.LastIndexOf(@”\”, System.StringComparison.Ordinal) + 1,
                                    file.FileName.Length
                                    – file.FileName.LastIndexOf(@”\”, System.StringComparison.Ordinal) – 1);

                            var attachment = this.CreateAttachment(prettyFileName, file.InputStream);
                            emailSendInput.Attachments.Add(attachment);
                        }
                    }
                }

                B2BMortgageDataServiceAgent b2BMortgageDataServiceAgent = new B2BMortgageDataServiceAgent();
                EmailSendResponse emailSendResponse = b2BMortgageDataServiceAgent.SendEmail(emailSendInput);
                if (!emailSendResponse.Success)
                {
                    throw new Exception(emailSendResponse.Message);
                }

 

and finally the encoding method which makes this possible:

private EmailEncodedAttachment CreateAttachment(string fileName, Stream stream)
        {
            EmailEncodedAttachment att = new EmailEncodedAttachment
            {
                Name = fileName,
                MediaType = System.Net.Mime.MediaTypeNames.Text.Plain
            };

            byte[] buffer = new byte[stream.Length];
            stream.Read(buffer, 0, (int)stream.Length);
            att.Base64Attachment = Convert.ToBase64String(buffer);

            return att;
        }

 

There you have it folks. I hope you have a great Sunday!

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C# Application linked to SharePoint List Web Service

This weekend found myself knee deep in a crisis that my friend who had migrated from SharePoint 2003 to 2007 (there were reasons he couldn’t go to 2010). Simply put the migration from SharePoint 2003 to 2007 had broken his application (tracking program that submitted data to a 2003 SharePoint List) because in SharePoint 2007  you can’t do this while not on the actual server if you have “Web Page Security Validation” enabled. So for the code below you have to have SPWeb.AllowUnsafeUpdates = true; . Obviously not the ideal solution for my friend but we didn’t have time to screw around. Here is what I did….

 

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Collections;
using System.Xml;
using System.ServiceModel;
using System.Net;
 
namespace Trigger_Tracker
{
    public partial class Form1 : Form
    {//form move on click and drag
        bool FormMoving;
        Point initialPoint;
        TriggerTrackerPictureBox frmPicture;
 
        public Form1()
        {//form move on click and drag
            InitializeComponent();
            comboBox1.SelectedIndex = 0;
            FormMoving = false;
 
            frmPicture = new TriggerTrackerPictureBox();
            frmPicture.localForm = this;
            frmPicture.Owner = this;
            frmPicture.Show();
            frmPicture.Width = 68;
            frmPicture.Height = 65;
            SetPositionOfPictureForm();
        }
 
        private void SetPositionOfPictureForm()
        {
            frmPicture.Top = this.Top + 26;
            frmPicture.Left = this.Left + 87;
        }
 
       
 
        private void TrackerButton(object sender, EventArgs e)
        {
            string listGUID = “A93E1A7E-67D0-4D7D-A4ED-803D7DFE684B”;
            string viewGUID = “6B2F3EF2-4B0C-41E1-B87E-0C3185B587DD”;
            //string viewGUID2 = “6B2F3EF2-4B0C-41E1-B87E-0C3185B587DD”;
 
            int ItemCounter = 1;
            ServiceList.Lists listService = new ServiceList.Lists();
           // RetentionLists.ListsSoapClient listService = new RetentionLists.ListsSoapClient();
 
            //////
           listService.Credentials = System.Net.CredentialCache.DefaultNetworkCredentials;
           //listService.ChannelFactory.Credentials.Windows.ClientCredential   = System.Net.CredentialCache.DefaultNetworkCredentials;
 
            XmlNode activeItemData = listService.GetListItems(listGUID, viewGUID, null, null, “100”, null);
            XmlDocument xDoc = new XmlDocument();
            string tmpString = activeItemData.InnerXml.Replace(“\r\r”, “”);
            xDoc.LoadXml(tmpString);
            XmlNamespaceManager nsManager = new XmlNamespaceManager(xDoc.NameTable);
            nsManager.AddNamespace(“z”, “#RowsetSchema”);
            nsManager.AddNamespace(“rs”, “urn:schemas-microsoft-com:rowset”);
 
            XmlNodeList xNode = xDoc.SelectNodes(“/rs:data/z:row”, nsManager);
 
            foreach (XmlNode tmpNode in xNode)
                ItemCounter++;
 
            StringBuilder strBuilder = new StringBuilder();
            strBuilder.Append(“<Method ID='” + ItemCounter + “‘ Cmd=’New’>”);
            strBuilder.Append(“<Field Name=’Attachments’>” + “0” + “</Field>”);
            strBuilder.Append(“<Field Name=’Title’>” + PolicyNumber.Text + “</Field>”);
            strBuilder.Append(“<Field Name=’Reason’>” + comboBox1.Text + “</Field>”);
            strBuilder.Append(“</Method>”);
 
            string strBatch = strBuilder.ToString();
 
            XmlDocument newDoc = new XmlDocument();
            XmlElement newElement = newDoc.CreateElement(“Batch”);
            newElement.SetAttribute(“OnError”, “Continue”);
            newElement.SetAttribute(“ViewName”, viewGUID);
            newElement.InnerXml = strBatch;
           
            XmlNode returnNode = listService.UpdateListItems(listGUID, newElement);
 
            this.comboBox1.Text = “Please Select….”;
            this.PolicyNumber.Text = “”;
            this.PolicyNumber.Mask = “0000000000”;
 
            comboBox1.Focus();
        }
 
       
 
 
        public void Form1_MouseUp(object sender, MouseEventArgs e)
        {//form move on click and drag
            FormMoving = false;
        }
 
        public void Form1_MouseMove(object sender, MouseEventArgs e)
        {//form move on click and drag
            if (FormMoving)
            {
                if ((Left + e.X – initialPoint.X) <= 0)
                    Left = 0;
                else if ((Right + e.X – initialPoint.X) >= Screen.PrimaryScreen.Bounds.Right)
                    Left = Screen.PrimaryScreen.Bounds.Right – Width;
                else
                    Left = Left + e.X – initialPoint.X;
                if ((Top + e.Y – initialPoint.Y) <= 0)
                    Top = 0;
                else if ((Bottom + e.Y – initialPoint.Y) >= Screen.PrimaryScreen.Bounds.Bottom)
                    Top = Screen.PrimaryScreen.Bounds.Bottom – Height;
                else
                    Top = Top + e.Y – initialPoint.Y;
            }
            SetPositionOfPictureForm();
        }
 
        public void Form1_MouseDown(object sender, MouseEventArgs e)
        {//form move on click and drag
            FormMoving = true;
            initialPoint = new Point(e.X, e.Y);
        }
 
        public void pictureBox1_MouseDown(object sender, MouseEventArgs e)
        {//form move on click and drag
            FormMoving = true;
            initialPoint = new Point(e.X, e.Y);
        }
 
        private void pictureBox1_MouseMove(object sender, MouseEventArgs e)
        {
        }
 
        private void pictureBox1_MouseHover(object sender, EventArgs e)
        {
        }
 
        public void label1_MouseHover(object sender, EventArgs e)
        {
            FormMoving = false;
        }
 
        public void label1_MouseUp(object sender, MouseEventArgs e)
        {
            FormMoving = false;
        }
 
       
 
        public void Form1_MouseHover(object sender, EventArgs e)
        {
            this.Opacity = 1;
        }
 
        public void Form1_MouseLeave(object sender, EventArgs e)
        {
            if(!PolicyNumber.Focused)
                this.Opacity = .25;
        }
 
        public void pictureBox1_MouseLeave(object sender, EventArgs e)
        {
            this.Opacity = 1;
        }
 
        public void pictureBox1_MouseHover_1(object sender, EventArgs e)
        {
            this.Opacity = 1;
        }
 
        public void Form1_Click(object sender, EventArgs e)
        {
            comboBox1.Focus();
        }
    }
}

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Fluent C# Review: The Intro

I have received an advanced copy of  the book Fluent C# by noted .NET author Rebecca Riordan. Since this blog is often about what I am doing, I am going to give you all an inside look at what I feel is the most innovative and groundbreaking method of teaching programing skills that I have seen come along in quite some time. I intend to go chapter by chapter reviewing the concepts of what the book is teaching.

The first thing that grabs you is the cover of the book. It is not your typical programming book cover. It is….almost artsy and fun.

51arXWhGmiL__SL500_AA300_

No computer like lettering or images of how powerful you can become. It makes you want to smile. At first I didn’t like it at all. It doesn’t look feel or look like what a “computer book” should to me or at least what I would expect. As the book began I was stunned. I have never seen a computer programming book look like so!

image

The images really just jump off the page at you and grab your attention. I am used to a text learning process. So this was going to be something new. But as I progressed to the end of this chapter I really began to feel like this might be a new way to learn.

I had the opportunity to ask a few questions of the author of Fluent C#. She said that Fluent C# was “an introduction development in the C# language with .NET and WPF, aimed at beginning programmers” and that Fluent C# was different than other C# tutorials because of

“1) learn the way your brain learns, by trial & error rather than lecture and dictation
2) heavy use of graphics appeals to all the senses, making it easier to remember
3) concepts first, details later, just the way the brain works”

All in all I think I am going to find this book an interesting read and definitely a new way to learn. I am very much looking forward to it.

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Write Data From DataTable To Excel With an Array Using C#

This is actually a redo of code written in vb.net a while back that dumps data from a datatable in a dataset into an excel spreadsheet in an effective and fast manner. I am always getting asked how to do this in C# so I decided to put that up today. Yes, I do C# too! Just didn’t want to admit it….

It’s pretty self explanatory. Don’t forget to clean up your excel instance when done. If you have any questions please feel free to send me an email.

Import an excel reference and at the top of your code you need your import statements. Then simply pass your dataset and datatable (granted you could just pass the datatable – I had my reasons for passing the dataset too at the time) to the method. The array is declared as an object because sometimes the compiler has to deal with unforeseen data issues that might arise and it has been effective for me to do let it handle those situations as they arise. I hope you find this useful.

using Excel = Microsoft.Office.Interop.Excel;
using Office = Microsoft.Office.Core;

public void CreateSpreadSheetFromDataSet(DataSet ds, DataTable dt)
        {

            Excel.Application Excel = new Excel.Application();
            Excel.Visible = true;
            Excel.Worksheet WSheet = new Excel.Worksheet();
            Excel.Workbooks.Add();
            WSheet = Excel.ActiveWorkbook.ActiveSheet;
            int rows = ds.Tables[dt.TableName].Rows.Count;
            int columns = ds.Tables[dt.TableName].Columns.Count;
            int r = 0; int c = 0;
            object[,] DataArray = new object[rows + 1, columns + 1];
            for (c = 0; c <= columns – 1; c++)
            {
                DataArray[r, c] = ds.Tables[dt.TableName].Columns[c].ColumnName;
                for (r = 0; r <= rows – 1; r++)
                {
                    DataArray[r, c] = ds.Tables[dt.TableName].Rows[r][c];
                } //end row loop
            } //end column loop

//actually write array to Excel Spreadsheet
            WSheet.Range[“A2”].Resize[rows, columns].Value = DataArray;

            //write header row to spreadsheet
            int DataTableColumnCounter;
            int ExcelColumnCounter = 1; //excel spreadsheets start at 1 when counting columns not zero!
            for (DataTableColumnCounter = 0; DataTableColumnCounter <= ds.Tables[dt.TableName].Columns.Count – 1; DataTableColumnCounter++)
            {
                WSheet.Cells[1, ExcelColumnCounter].Value = ds.Tables[dt.TableName].Columns[DataTableColumnCounter].ColumnName;
                ExcelColumnCounter = ExcelColumnCounter + 1; //moving to next column
            }
        }

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