how to pass values to another page using query string

in design i have two pages.

in first design page i have two textboxes

Number1 10(textbox1)

Number2 12(textbox2)

first design page code as follows

using System;

using System.Data;

using System.Configuration;

using System.Web;

using System.Web.Security;

using System.Web.UI;

using System.Web.UI.WebControls;

using System.Web.UI.WebControls.WebParts;

using System.Web.UI.HtmlControls;

using System.Data.SqlClient;

public partial class _Default : System.Web.UI.Page

{

protected void Page_Load(object sender, EventArgs e)

{

string number1 = Request.QueryString[0];

string number2 = Request.QueryString[1];

int result = Convert.ToInt32(number1) + Convert.ToInt32(number2);

//TextBox1.Text = result.ToString();

}

protected void LinkButton1_Click(object sender, EventArgs e)

{

string urltoNaviget = " ~/Add.aspx?Number1=" + txt_name.Text + "&Number2=" + txt_age.Text;

LinkButton1.PostBackUrl = urltoNaviget;

}

In Second design page i have one textbox

Adding Two numbers 22(textbox1)

Second design page code as follows

using System;

using System.Data;

using System.Configuration;

using System.Collections;

using System.Web;

using System.Web.Security;

using System.Web.UI;

using System.Web.UI.WebControls;

using System.Web.UI.WebControls.WebParts;

using System.Web.UI.HtmlControls;

using System.Data.SqlClient;

public partial class Default2 : System.Web.UI.Page

{

protected void Page_Load(object sender, EventArgs e)

{

string number1 = Request.QueryString[0];

string number2 = Request.QueryString[1];

// The other way to Read the values

//string number1 = Request.QueryString["Number1"];

//string number2 = Request.QueryString["Number2"];

int result = Convert.ToInt32(number1) + Convert.ToInt32(number2);

TextBox1.Text = result.ToString();

}

When i run i have following error as follows

Index was out of range. Must be non-negative and less than the size of the collections.

Parameter name: index

Please help me

thanks,

Rao.,

1 Reply

Know the answer? Post it — somebody with the same question will find it here.

hj jh14y ago
try it with
string number1 = Request.QueryString["Number1"],toString();
int num1 = Convert.ToInt32(number1);

Ofcouse use validations to check whether number1 is null or not before converting it to int.

Let me know if problem resolved or not