Alert Message using Response.Write in Web through C# Code

1) Hardcoded Alert

Response.Write("{script}alert("Hello");{/script}");

2) Variable Alert

string txtName = "Hello " + txtText.Text;

Response.Write("{script}alert('" + txtName + "');{/script}");

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Required Field Validator does not fire in Firefox - Solution

Always write code under Page.IsValid scope if Required Field Validator does not fire in Firefox but fires in IE.

try

 {

       if (Page.IsValid)

     {

            // code

      }

 }

 catch (Exception ex)

{

       string msg = ex.Message;

}

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Paging Code Behind

protected void gvColumnList_PageIndexChanging(object sender, GridViewPageEventArgs e)

    {        

        gvColumnList.PageIndex = e.NewPageIndex;

        gvColumnList.DataSource = ViewState["vsGridView"];

        gvColumnList.DataBind();                        

    }

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THIS DATASOURCE DOES NOT SUPPORT SERVER-SIDE DATA PAGING

To solve this problem (THIS DATASOURCE DOES NOT SUPPORT SERVER-SIDE DATA PAGING ), you must set GridView DataSource Property as DataSet not DataReader .

GridView PageIndex Code Behind

protected void gridView_PageIndexChanging(object sender, GridViewPageEventArgs e)
{
gridView.PageIndex = e.NewPageIndex;
gridView.DataBind();
}