gridview 怎么获取RadioButton选中行的值？

protected void butpreview_Click1(object sender, EventArgs e)
{
string bugid = "";
foreach (GridViewRow rowview in GridView1.Rows)
{
RadioButton box = (RadioButton)rowview.Cells[0].FindControl("RadioButton1");
if (box.Checked == true)
{
bugid = rowview.Cells[1].Text;

}
}
Session["bugid"] = bugid;
Response.Redirect("preview.aspx");
}
调试过，box的值是空的，那出了问题？或者有没别的方法？谢谢

RadioButton是在第一列啊

RadioButton box = (RadioButton)rowview.FindControl("RadioButton1");

int count = 0; //用于保存选中radiobutton的数量 //dg_list为datagridview控件 for (int a = 0; a < datagridview3.rowcount; a++) { if (datagridview3.rows[a].cells[0].editedformattedvalue.tostring() == "true") //这里判断复选框是否选中 { count++; } } if (count == 0) { messagebox.show("请至少选择一条数据！", "提示"); return; }

bugid = rowview.Cells[1].Text; 里面的“rowview.Cells[1].Text;”：1、要把Cells[1].这一列设为模板列！在ItemTemPlate中拖入一个TextBox！ 2、给bugid赋值的时候应该也是写成“ Convert.ToString(((TextBox)rowview.Cells[1].FindControl("TextBox1")).Text);”这种形式！