Search within Gridview based on search criteria

In other forum, one user asked me to search within Grid view , and its display only those rows which match with the search criteria. so I given some code like this:

Code Snippet :

// iterate through all rows

for (int j = 0; j < GridView1.Rows.Count; j++)

{

// iterate through all cols

for (int i = 0; i < GridView1.Columns.Count; i++)

{

//match each cell of row with search value

if (GridView1.Rows[j].Cells[i].Text.Contains("search criteria"))

{

//set visible true if match with criteria

GridView1.Rows[j].Cells[i].Visible = true;

break;

}

else

{

//set visible false if match with criteria

GridView1.Rows[j].Cells[i].Visible = false;

}