GridView的基本操作：呈现页面前处理 事件：PreRender
protected void GV_GameList_PreRender(object sender, EventArgs e)
{
if (((CheckBox)GV_GameList.HeaderRow.FindControl("ck_selectAll")).Checked == true)
{
for (int i = 0; i < GV_GameList.Rows.Count; i++)
{
((CheckBox)GV_GameList.Rows[i].FindControl("Ck_nominate")).Checked = true;
}
}
else
{
for (int i = 0; i < GV_GameList.Rows.Count; i++)
{
((CheckBox)GV_GameList.Rows[i].FindControl("Ck_nominate")).Checked = false;
}
}
}
//说明：源GridView的第一列用TemplateField和CheckBox实现，
//用于表述某项数据是否已被选定
//可以用此方法表示数据库中的Bool类型
protected void GV_GameList_PreRender(object sender, EventArgs e){
if (((CheckBox)GV_GameList.HeaderRow.FindControl("ck_selectAll")).Checked == true){
for (int i = 0; i < GV_GameList.Rows.Count; i++){((CheckBox)GV_GameList.Rows[i].FindControl("Ck_nominate")).Checked = true;}}else{for (int i = 0; i < GV_GameList.Rows.Count; i++){((CheckBox)GV_GameList.Rows[i].FindControl("Ck_nominate")).Checked = false;}} }//说明：源GridView的第一列用TemplateField和CheckBox实现，//用于表述某项数据是否已被选定//可以用此方法表示数据库中的Bool类型