Code

Select All Grid Rows-------
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function SelectAll(id)
{
//get reference of GridView control
var grid = document.getElementById("<%= grdCompany.ClientID %>");
//variable to contain the cell of the grid
var cell;

if (grid.rows.length > 0)
{

//loop starts from 1. rows[0] points to the header.
for (i=1; i {
//get the reference of first column
cell = grid.rows[i].cells[0];

//loop according to the number of childNodes in the cell
for (j=0; j {
//if childNode type is CheckBox
if (cell.childNodes[j].type =="checkbox")
{
//assign the status of the Select All checkbox to the cell checkbox within the grid
cell.childNodes[j].checked = document.getElementById(id).checked;

}
}
}
}
}

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