How to make paging for grid in asp.net

How to make paging for grid in asp.net

first take PageIndexChanging event and paste this code

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protected void Gridalldisplay_PageIndexChanging(object sender, GridViewPageEventArgs e)

{

Gridalldisplay.PageIndex = e.NewPageIndex;

grid();

}

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public void grid() //function for populating grid

{

dt = obj.call("Select * from table_name");

if (dt.Rows.Count > 0)

Gridalldisplay.DataSource = dt;

Gridalldisplay.DataBind();

}

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