Sending textbox data to another page

The reason for you error is, the method "rptSample_ItemCommand" NOT defined in your codebehind file. Take a close look on the sample that I provided once again, in the previous post. "Demo.aspx.cs" contains the method named "rptSample_ItemCommand". In that particular method alone I take the text box value and put it in session and redirect to another page.

Also I would suggest, create 2 pages (Demo.aspx and Webform1.aspx) in a separate project and copy my code and try to debug it for better understanding.

you can store data as Session["AnyVariableName"] = YourDataToBeSent;

you can retrieve data as YourVariableToSaveData = Session["AnyVariableName"];

 

I have wrote the complete code for your with repeater. Try this code and I'm sure it will solve your problem. Let me know if any issues.

Demo.aspx

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Demo.aspx.cs" Inherits="GridviewDemo.Demo" %>



   


   
       

Demo.aspx.cs

using System;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data;

namespace GridviewDemo
{
    public partial class Demo : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            if (!Page.IsPostBack)
            {
                DataTable dt = GetTable();
                rptSample.DataSource = dt;
                rptSample.DataBind();

            }
        }
        // contsturct temp data table for example purpose
        static DataTable GetTable()
        {
            // Here we create a DataTable with four columns.
            DataTable table = new DataTable();
            table.Columns.Add("Age", typeof(int));
            // Here we add five DataRows.
            table.Rows.Add(25);
            table.Rows.Add(50);
            table.Rows.Add(10);
            table.Rows.Add(21);
            table.Rows.Add(100);
            return table;
        }
        // This event called when you click the button
        protected void rptSample_ItemCommand(object source, RepeaterCommandEventArgs e)
        {
            if (e.CommandName == "SendData")
            {
                // Get the Text box instance
                TextBox txt =(TextBox) e.Item.FindControl("txtName");
                // Get the data from it
                string strTextBoxValue = txt.Text;
                //store it in session
                Session["TextData"] = strTextBoxValue;
                // redirect to another page
                Response.Redirect("WebForm1.aspx");
            }
        }
    }
}

Webform1.aspx.cs

using System;
namespace GridviewDemo
{
    public partial class WebForm1 : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            //Get the session value
            Response.Write("Received Data is :" + Session["TextData"]);
        }
    }
}
 

My previous post is useless, since you are using "Repeater". So I would suggest, follow the below url, it will assist you for the solution:

http://stackoverflow.com/questions/2484806/accessing-textboxes-in-repeater-control