Web Forms :: Change Database Connection From SQL Datasource To Code Behind
Feb 10, 2012
<asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$appSettings:ConnString%>"Â SelectCommand="sql query ............."
This is in design and with the above I have
 SqlDataSource1.SelectCommand = "sql query ............. " in code behind
but if i have the connection in code behind. How do I execute
SqlDataSource1.SelectCommand == "sql query ............. "
It without any reader or dataset...
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<%@ Page Title="" Language="VB" MasterPageFile="~/MasterPage.master" %>
<script runat="server">
Const ConnectionString As String = "Data Source=1234.database.com;Initial Catalog=database_name;Persist Security Info=True;User =user_name;Password=123456"
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs)
Dim MyConn As New Data.SqlClient.SqlConnection(ConnectionString)
Dim cmd As New Data.SqlClient.SqlCommand("Select count (*) from Classifieds where (ClassifiedCatagory = 'Antiques')", MyConn)
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at System.Data.SqlClient.SqlConnection.OnError(SqlException exception, Boolean breakConnection) at System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection) at System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj) at System.Data.SqlClient.TdsParser.Run(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj) at System.Data.SqlClient.SqlDataReader.ConsumeMetaData() at System.Data.SqlClient.SqlDataReader.get_MetaData() at System.Data.SqlClient.SqlCommand.FinishExecuteReader(SqlDataReader ds, RunBehavior runBehavior, String resetOptionsString) at System.Data.SqlClient.SqlCommand.RunExecuteReaderTds(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, Boolean async) at System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method, DbAsyncResult result) at System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method) at System.Data.SqlClient.SqlCommand.ExecuteReader(CommandBehavior behavior, String method) at System.Data.SqlClient.SqlCommand.ExecuteReader() at _Default.Button1_Click(Object sender, EventArgs e) in c:Documents and SettingsaMy DocumentsVisual Studio 2008WebSitesoolbar1Default.aspx.cs:line 56
My code is:
using System;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;
using System.Data.SqlClient;
public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
try
{
SqlConnection myConn = new SqlConnection("Server=localhost;Database=testcase;Integrated Security=SSPI");
SqlCommand myCmd = new SqlCommand("select skey,casecode from casetype", myConn);
myConn.Open();
SqlDataReader myReader = myCmd.ExecuteReader();
//Set up the data binding.
DropDownList3.DataSource = myReader;
DropDownList3.DataTextField = "skey";
DropDownList3.DataValueField = "casecode";
DropDownList3.DataBind();
//Close the connection.
//myConn.Close();
//myReader.Close();
//Add the item at the first position.
DropDownList3.Items.Insert(0, "<-- Select -->");
}
catch (Exception ex)
{
Response.Write(ex.StackTrace);
}
}
}
protected void Button1_Click(object sender, EventArgs e)
{
try
{
SqlConnection myConn1 = new SqlConnection("Server=localhost;Database=testcase;Integrated Security=SSPI");
SqlCommand myCmd1 = new SqlCommand("select casename,skey from casetype where skey=?", myConn1);
myConn1.Open();
SqlDataReader myReader1 = myCmd1.ExecuteReader();
String type = DropDownList3.SelectedItem.Text;
myCmd1.Parameters.AddWithValue("?", type);
}
catch (Exception exw)
{
Response.Write(exw.StackTrace);
}
}
}
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[code]....
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