Passing Value

I have created an web form in asp.net/c#.  When a user types something in a textbox and presses a button, the gridview shows the matching records.  That works just fine.

Now the problem that I am having is that when I move the textbox and button to the master page, I am experiencing some issues.  The issues I am experiencing are:
1.  The GridView's Stored procedure can't find the new control.  
2.  When the page opens, that has the search results,  the results of the text box are lost.

This should happen- a user types  in the textbox and presses submit, the new page opens (in the same window) and shows matching records. I am a beginner to asp.net/c#.  If someone could let me know how to do this step by step, that would be appreciated.  Thanks!
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jjrr007Asked:
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urvinayanConnect With a Mentor Commented:
Hope the attached snippet helps

protected void Page_Load(object sender, EventArgs e)
    {
                  ContentPlaceHolder mpContentPlaceHolder;
        TextBox mpTextBox;
        mpContentPlaceHolder =
          (ContentPlaceHolder)Master.FindControl("ContentPlaceHolder2");
        if (mpContentPlaceHolder != null)
        {
            mpTextBox =
                (TextBox)mpContentPlaceHolder.FindControl("TextBox2");
            if (mpTextBox != null)
            {
                            SqlDataSource1.SelectParameters.Add("ProductID", mpTextBox.Text);
      
            }
        }

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Juan_BarreraCommented:
jjrr007,
Have you tried the last bits I posted in your other thread?
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jjrr007Author Commented:
Thanks. I have just tried that.  Feel free to post here as well.  
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Rupesh PCommented:
Hi,
You have to get the control's value from the master page. Now your gridview control is in the content page and textbox and button are in the master page rt?

You have to pick the value from the master page itself.  To do this, this link will help you

http://msdn.microsoft.com/en-us/library/xxwa0ff0.aspx
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jjrr007Author Commented:
Thanks for your time.  This got me closer, but I couldn't get to work.

Using the link (http://msdn.microsoft.com/en-us/library/xxwa0ff0.aspx), the text box was found, helped, but I can get the value just yet.  When I used the code listed in the snippet, I see the words, "TextBox found!".  However, I can't have the value sent  to the GridView's query.  How do I do that?  That is really what I am look for.

Thanks again for the start.  
    protected void Page_Load(object sender, EventArgs e)
    {
          SqlDataSource1.SelectParameters.Add("ProductID", "");
        ContentPlaceHolder mpContentPlaceHolder;
        TextBox mpTextBox;
        mpContentPlaceHolder =
          (ContentPlaceHolder)Master.FindControl("ContentPlaceHolder2");
        if (mpContentPlaceHolder != null)
        {
            mpTextBox =
                (TextBox)mpContentPlaceHolder.FindControl("TextBox2");
            if (mpTextBox != null)
            {
                mpTextBox.Text = "TextBox found!";
            }
        }

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jjrr007Author Commented:
Thanks. That worked
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