文本框将不会显示通过代码进行的.text更改. [英] textbox will not show the .text changes made through code.

问题描述

我有一个Web项目，如果用户在下拉列表或组合框中选择某个值，则文本将添加到文本框中.文本已分配(通过查看调试器)，但未显示在网页上.

I have a web project where if the user selects a certain value in a dropdown or combo box, text will be added into a textbox. The text is assigned (by looking the debugger) but is not showing on the webpage.

txtMyTextBox.text = ddMydropdown.text

txtMyOtherTextBox = cboMyCombo.text

我需要添加刷新以显示更改吗?所有控件的autopostback设置为true.

Is there a refresh that I need to add for the changes to show? All control have the autopostback set to true.

推荐答案

将控件放入更新面板和
在加载事件

使用

if(IsPostback)
{
返回；
}

put your controls inside update panel and
at the load event

use

if(IsPostback)
{
return;
}

在您提供的代码中，您正在将组合框的文本分配给文本框控件.

In the code you have provided you are assigning the text of combobox to textbox control.

txtMyOtherTextBox = cboMyCombo.text

在这里您需要使用文本属性

here you need to use text property

txtMyOtherTextBox.Text = cboMyCombo.text

希望对您有所帮助.

Hope this will help you.

您可以像这样使用

you can use like this

txtMyOtherTextBox .Text=ddMydropdown.SelectedItem.Text;

这篇关于文本框将不会显示通过代码进行的.text更改.的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！