GridView更新，没报错，怎么就是没成功！

cs代码：
protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)
    {
        GridView1.DataKeyNames = new string[] { "question_ID" };
        QuestionKeep qk = new QuestionKeep();
        string Content = ((TextBox)GridView1.Rows[e.RowIndex].FindControl("txtquestion_content")).Text.ToString().Trim();
        string Answer = ((TextBox)GridView1.Rows[e.RowIndex].FindControl("txtquestion_answer")).Text.ToString().Trim();
        string Standard = ((TextBox)GridView1.Rows[e.RowIndex].FindControl("txtquestion_Standard")).Text.ToString().Trim();
        string Express = ((TextBox)GridView1.Rows[e.RowIndex].FindControl("txtquestion_Express")).Text.ToString().Trim();
        string ID = GridView1.DataKeys[e.RowIndex].Values[0].ToString();
        DataSet ds1 = qk.UpdateJudgeQuestion(Content,Answer,Standard,Express, Convert.ToInt32(ID));
        GridView1.DataSource = ds1;
        GridView1.EditIndex = -1;
        bind();
    }
    void bind()
    {
        QuestionKeep qk = new QuestionKeep();
        DataSet ds1 = qk.judgekeep();
        GridView1.DataSource = ds1;
        GridView1.DataKeyNames = new string[] { "question_ID" };
        GridView1.DataBind();
    }
UpdateJudgeQuestion方法：
public DataSet UpdateJudgeQuestion(string question_content, string question_Answer, string question_standard, string question_Express, int question_ID)
    {
        Exercise exec = new Exercise();
        SqlConnection con = exec.getcon();
        SqlCommand cmd = new SqlCommand("UpdateJudgeQuestion", con);
        cmd.CommandType = CommandType.StoredProcedure;        SqlParameter paramquestion_content = new SqlParameter("@question_content", SqlDbType.VarChar, 500);
        paramquestion_content.Value = question_content;
        cmd.Parameters.Add(paramquestion_content);        SqlParameter paramquestion_Answer = new SqlParameter("@question_Answer", SqlDbType.VarChar, 500);
        paramquestion_Answer.Value = question_Answer;
        cmd.Parameters.Add(paramquestion_Answer);
        SqlParameter paramquestion_standard = new SqlParameter("@question_standard", SqlDbType.VarChar, 500);
        paramquestion_standard.Value = question_standard;
        cmd.Parameters.Add(paramquestion_standard);
        SqlParameter paramquestion_Express = new SqlParameter("@question_Express", SqlDbType.VarChar, 500);
        paramquestion_Express.Value = question_Express;
        cmd.Parameters.Add(paramquestion_Express);        SqlParameter paramquestion_ID = new SqlParameter("@question_ID", SqlDbType.Int);
        paramquestion_ID.Value = question_ID;
        cmd.Parameters.Add(paramquestion_ID);        DataSet ds = new DataSet();
        SqlDataAdapter ada = new SqlDataAdapter(cmd);
        ada.Fill(ds);
        return ds;
    }
存储过程：CREATE PROCEDURE  UpdateJudgeQuestion
(@question_content  varchar(500),@question_Answer varchar(500),@question_standard varchar(200),
@question_Express varchar(200),@question_ID int)
AS  
update judge 
set question_content=@question_content
,question_answer=@question_answer,question_standard=@question_standard,question_express=@question_express
where
question_id=@question_id
GO