asp.net gridview与VB.net函数不同步 [英] asp.net gridview out of sync with VB.net function

问题描述

您好，



简单的asp.net网页，我通过使用下拉框过滤查询将数据加载到gridview中。这都是在asp.net方面。在VB.net方面，我根据数据网格中的值更改文本框的背景颜色。



问题



我的文本框着色结果总是落后1个事件。每当我更改下拉列表以刷新datagrid中的结果时，我的文本框阴影反映了gridview的最后状态而不是当前状态。

Hello,

simple asp.net webpage in which I am loading data into a gridview by filtering the query with a dropdown box. This is all on the asp.net side. On the VB.net side I am changing the background color of text boxes based on the value in the datagrid.

PROBLEM

My results with text box shading is always 1 event behind. Every-time I change the dropdown list to refresh the result in the datagrid my text box shading reflects the last state of the gridview not the current state.

Public Sub DropDownList1_SelectedIndexChanged(ByVal sender As Object, ByVal e As EventArgs) Handles DropDownList1.SelectedIndexChanged

       Try
           If GridView1.Rows(0).Cells(3).Text = "Yes" Then TextBox2.BackColor = Drawing.Color.LightGreen Else TextBox2.BackColor = Drawing.Color.LightSalmon

推荐答案

可能你缺少设置AutoPostBack [ ^ ]



将此添加到下拉列表标记 -

Probably you are missing to set AutoPostBack[^]

add this to the dropdownlist markup-

AutoPostBack="True"

示例：

Example:

<asp:dropdownlist xmlns:asp="#unknown">
             ID="DropDownList1"
             runat="server"
             AutoPostBack="true"
</asp:dropdownlist>

希望，它帮助：）

Hope, it helps :)

确实启用了autopostback并且gridview正确更新但是我上面发布的文本框背景查询不同步并且总是落后1个事件。

autopostback is indeed enabled and the gridview updates correctly however the textbox background query which I posted above is not in sync and is always 1 event behind.

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