试试这段代码一次。

 protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e) { GridViewRow row = (GridViewRow)GridView1.Rows[e.RowIndex]; int id = Int32.Parse(GridView1.DataKeys[e.RowIndex].Value.ToString()); TextBox tname = (TextBox)row.FindControl("nam"); TextBox tques = (TextBox)row.FindControl("que"); MySqlCommand cmd = new MySqlCommand("update exam set name1=@name,ques=@ques where id = @id", con); cmd.Parameters.Add("@id", MySqlDbType.Int16).Value = id; cmd.Parameters.Add("@name", MySqlDbType.VarChar, 30).Value = tname.Text.Trim(); cmd.Parameters.Add("@ques", MySqlDbType.VarChar,40).Value = tques.Text.Trim(); con.Open(); cmd.ExecuteNonQuery(); GridView1.EditIndex = -1; bind(); } 

并非所有GridViewRow都有DataItem。

您应该在代码周围添加if块，并validation正在更新的行是DataRow类型。

 if (e.Row.RowType == DataControlRowType.DataRow) { your code here... } 

有关RowTypes的更多信息： http ： //msdn.microsoft.com/en-us/library/system.web.ui.webcontrols.gridviewrow.rowtype.aspx

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 public void bindGvEdit() { GridView1.DataSource = obj1.SelectAlltbl(); GridView1.DataBind(); } protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e) { GridView1.EditIndex = e.NewEditIndex; bindGvEdit(); } protected void GridView1_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e) { GridView1.EditIndex = -1; bindGvEdit(); } protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e) { GridViewRow row = GridView1.Rows[e.RowIndex]; obj1.Id = Convert.ToInt32(GridView1.DataKeys[row.RowIndex].Value); obj1.Name = ((TextBox)row.Cells[1].Controls[1]).Text; obj1.Description = ((TextBox)row.Cells[2].Controls[1]).Text; obj1.Updatetbl(); GridView1.EditIndex = -1; bindGvEdit(); }