ConnectionString property has not been initialized.

Question

User181052745 posted

This is my webconfig file

<?xml version="1.0"?>

<configuration>

<connectionStrings>
<add
name="TBNETConnectionString"
connectionString="Data Source=localhost\SQLEXPRESS;Initial
Catalog=NET;Persist Security Info=True;User
ID=sa;Password=sa"
providerName="System.Data.SqlClient"
/>
</connectionStrings>

<system.web>
<compilation debug="true" targetFramework="4.0" />


</system.web>
</configuration>

This is my default.aspx.cs file

using System;
using System.Collections.Generic;
using System.Configuration;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Data;
using System.Data.SqlClient;

public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
if (Request.QueryString["SearchString"] != null)
{
DisplaySearchResults(Request.QueryString["SearchString"]);
}
}

public void DisplaySearchResults(string strSearch)
{
SqlCommand cmd = new SqlCommand("SearchByString", new SqlConnection(ConfigurationManager.AppSettings["NETConnectionstring"]));
cmd.CommandType = CommandType.StoredProcedure;
cmd.Parameters.AddWithValue("@SearchString", strSearch);
cmd.Connection.Open();
Repeater1.DataSource = cmd.ExecuteReader();
Repeater1.DataBind();
cmd.Connection.Close();
cmd.Connection.Dispose();
}

protected void Button1_Click(object sender, EventArgs e)
{
if (TextBox1.Text == "" | TextBox1.Text == null)
{
lblStatus.Text = "Please enter valid search criteria";
}
else
{
DisplaySearchResults(TextBox1.Text);
lblStatus.Text = "";
TextBox1.Text = "Request Submitted...";
}

}
}

gives InvalidOperationException was unhandled by user code

ConnectionString property has not been initialized.

What is the error and how to solve it??

Answer 1

User-821857111 posted

Your connection string is in the ConnectionStrings section, not AppSettings, and it is called "TBNETConnectionString", not "NETConnectionstring"

SqlCommand cmd = new SqlCommand("SearchByString", new SqlConnection(ConfigurationManager.ConnectionStrings["TBNETConnectionstring"].ConnectionString));

Answer 2

User181052745 posted

I made changes which rectified the earlier problem.

Now it is giving the error ArguementException was unhandled by user code:

Keyword not supported Initial catalog

What is the possible cause of error??

Answer 3

User-821857111 posted

Try this:

<add name="TBNETConnectionString" connectionString="Server=localhost\SQLEXPRESS;Database=NET;Persist Security Info=True;User ID=sa;Password=sa" providerName="System.Data.SqlClient"/>

Answer 4

User181052745 posted

problem solved..

thanks a lot