Question

我有一个Gridview，它上面有一个更新链接。从其中一行中选择“编辑”后，网格中该行中的值将更改为文本框并可进行编辑。 “编辑”按钮消失并变为“更新”链接。然后，用户编辑一个（或多个）文本框的内容，并选择“更新”。将出现一个JavaScript确认框，询问用户是否要更新值，并根据所选的选项保存或丢弃更改。这由“OnClientClick”执行但是，如果验证失败，我想验证更改服务器端并将定义的错误消息传回给用户。例;如果已将错误格式的注册公司名称输入所选行中的一个文本框中。然后，网格行将保持可编辑状态，直到用户更正错误。通过从网格行中选择“取消”可以丢弃该操作（我已经具有此功能）。 C＃rowcommand函数是：

  protected void GridView1_RowCommand(object sender, GridViewCommandEventArgs e)
    {
        if (e.CommandName == "Update")
        {
            // get the primary key id of the clicked row
            int id = Convert.ToInt32(e.CommandArgument);
            SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["moduleConnectionString"].ConnectionString);
            SqlCommand cmd = new SqlCommand();
            cmd.CommandText = "UPDATE suppliers SET Registered_company_name=@registered_company_name WHERE Supplier_code=@supplier_code;";

   System.Web.UI.WebControls.TextBox myTextBox_registered_company_name = GridView1.Rows[id].FindControl("Registered_company_name") as System.Web.UI.WebControls.TextBox;
            cmd.Parameters.Add("@registered_company_name", SqlDbType.VarChar).Value = myTextBox_registered_company_name.Text;

            System.Web.UI.WebControls.Label myLabel = GridView1.Rows[id].FindControl("suppliercode") as System.Web.UI.WebControls.Label;
            cmd.Parameters.Add("@supplier_code", SqlDbType.VarChar).Value = Convert.ToInt32(myLabel.Text);

    cmd.Connection = con;
            con.Open();

            cmd.ExecuteNonQuery();
            con.Close();




            GridView1.EditIndex = -1;
            BindData();


        }
  }

ASPX

   <asp:LinkButton ID="lnkUpdate" runat="server" CommandArgument='<%# Container.DataItemIndex %>' OnClientClick="return ConfirmOnUpdate();" CommandName="Update"  > Update</span></asp:LinkButton>

javascript是

  function ConfirmOnUpdate()
      {
          if (confirm("Are you sure you want to update this record?"))
              return true;
          else
              return false;
      }

感谢您的回复

Answer 1

使用此代码处理服务器端验证。

protected void GridView1_RowCommand(object sender, GridViewCommandEventArgs e)
    {
        if (e.CommandName == "Update")
        {
            // get the primary key id of the clicked row
            int id = Convert.ToInt32(e.CommandArgument);

            System.Web.UI.WebControls.TextBox myTextBox_registered_company_name = GridView1.Rows[id].FindControl("Registered_company_name") as System.Web.UI.WebControls.TextBox;

            if (myTextBox_registered_company_name.Text != "") // add your validation in this if block, now it checks textbox is not empty;
            {
                SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["moduleConnectionString"].ConnectionString);
                SqlCommand cmd = new SqlCommand();
                cmd.CommandText = "UPDATE suppliers SET Registered_company_name=@registered_company_name WHERE Supplier_code=@supplier_code;";

                System.Web.UI.WebControls.TextBox myTextBox_registered_company_name = GridView1.Rows[id].FindControl("Registered_company_name") as System.Web.UI.WebControls.TextBox;
                cmd.Parameters.Add("@registered_company_name", SqlDbType.VarChar).Value = myTextBox_registered_company_name.Text;

                System.Web.UI.WebControls.Label myLabel = GridView1.Rows[id].FindControl("suppliercode") as System.Web.UI.WebControls.Label;
                cmd.Parameters.Add("@supplier_code", SqlDbType.VarChar).Value = Convert.ToInt32(myLabel.Text);

                cmd.Connection = con;
                con.Open();

                cmd.ExecuteNonQuery();
                con.Close();

                GridView1.EditIndex = -1;
                BindData();
            }
            else
            {
                ScriptManager.RegisterStartupScript(this,this.GetType(),"Error Message", "alert('TextBox is empty!')",true);
            }
        }

希望这可以帮到你！

GridView RowCommand更新发送变量到javascript函数

1 个答案: