problem in deploying asp.net 4.0 web application

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i created connection string in a class but i am not able to use database.

public class DataContext
{
    SqlConnection con = new SqlConnection();
    SqlCommand cmd = new SqlCommand();
    SqlDataAdapter da = new SqlDataAdapter();
    //SqlDataReader dr = new SqlDataReader();
    public void Openconnection()
    {
        if (con.State == ConnectionState.Closed)
        {
            try
            {
                string constring = "data source = myserveraddress;Initial Catalog=mywebsite;Persist Security Info=True;User ID=myid;Password=mypassword";
                con.ConnectionString = constring;
                con.Open();
                cmd.Connection = con;
            }
            catch (Exception ex)
            {
                ex.Message.ToString();
            }
        }
    }
    public void CloseConnection()
    {
        if (con.State == ConnectionState.Open)
        {
            con.Close();
        }
    }
    public DataTable getDataTable(string Query)
    {
        DataTable dt = new DataTable();
        Openconnection();
        cmd.CommandType = CommandType.Text;
        cmd.CommandText = Query;
        da.SelectCommand = cmd;
        da.Fill(dt);
        CloseConnection();
        return dt;
    }
    public int executeNonquery(string Query)
    {
        Openconnection();
        cmd.CommandType = CommandType.Text;
        cmd.CommandText = Query;
        int i = cmd.ExecuteNonQuery();
        CloseConnection();
        return i;
    }

i am deploying my website by using connction strin like this...

Posted 29-Mar-11 9:56am

se.nishant

Updated 29-Mar-11 10:06am

v2

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Wendelius · Answer 1 · 2011-03-29T09:59:00

Solution 1

Try adding "Data Source=..." in the beginning of the connection string. For future use: http://www.connectionstrings.com/sql-server-2005[^]

Posted 29-Mar-11 9:59am

Wendelius

Comments

se.nishant 29-Mar-11 16:07pm

i still have same problem..

Wendelius 29-Mar-11 16:14pm

What is the error you get?

se.nishant 29-Mar-11 16:24pm

Fill: SelectCommand.Connection property has not been initialized.

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.InvalidOperationException: Fill: SelectCommand.Connection property has not been initialized.

Source Error:

An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.

Stack Trace:

[InvalidOperationException: Fill: SelectCommand.Connection property has not been initialized.]
System.Data.Common.DbDataAdapter.FillInternal(DataSet dataset, DataTable[] datatables, Int32 startRecord, Int32 maxRecords, String srcTable, IDbCommand command, CommandBehavior behavior) +223
System.Data.Common.DbDataAdapter.Fill(DataTable[] dataTables, Int32 startRecord, Int32 maxRecords, IDbCommand command, CommandBehavior behavior) +504
System.Data.Common.DbDataAdapter.Fill(DataTable dataTable) +324
DataContext.getDataTable(String Query) in C:\Users\nishant\word bitmaps and others\WebApplication2\WebApplication2\DataContext.cs:47
BusinessLogic.Getarticlesforindex() in C:\Users\nishant\word bitmaps and others\WebApplication2\WebApplication2\BusinessLogic.cs:218
WebApplication2._Default.Page_Load(Object sender, EventArgs e) in C:\Users\nishant\word bitmaps and others\WebApplication2\WebApplication2\index.aspx.cs:19
System.Web.Util.CalliHelper.EventArgFunctionCaller(IntPtr fp, Object o, Object t, EventArgs e) +25
System.Web.UI.Control.LoadRecursive() +71
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +3048

se.nishant 29-Mar-11 16:25pm

this is the error

Wendelius 29-Mar-11 16:40pm

Ok, you're also missing the assignment of the connection. Add:
...
Openconnection();
cmd.Connection = con;
cmd.CommandType = CommandType.Text;
...