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Recheck checkboxes in Asp.net Gridview


Posted Date: 30 Jun 2008    Resource Type: Code Snippets    Category: ASP.NET GridView
Author: AshokkumarMember Level: Silver    
Rating: Points: 7



//Namespace Reference
using System.Collections;


///
/// method to repopulate selected items in the GridView
/// NOTE: This is so if the user pages back to page they've been
/// to the selected items on that page are still selected
///
private void RePopulateCheckedItems(GridView grid, string ctrl)
{
ArrayList checkedItems = new ArrayList();
string chkBoxIndex;
CheckBox chk;

checkedItems = (ArrayList)Session["CheckedItems"];

//make sure we have selected items
if (!(checkedItems == null))
{
//loop through each row in the GridView
foreach (GridViewRow row in grid.Rows)
{
//get the index of each row
chkBoxIndex = (string)grid.DataKeys[row.RowIndex].Value.ToString();
//check to see if that index is in our ArrayList
if (checkedItems.Contains(chkBoxIndex))
{
//find the CheckBox column since it's in the ArrayList
chk = (CheckBox)row.FindControl(ctrl);
//check the CheckBox
chk.Checked = true;
}
//results = (string[])checkedItems.ToArray(typeof(string));
////now create our delimited string
//chkdItems = string.Join(",", results);
}
}
}



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