[英]asp.net textbox doesn't populate after postback
I am using ASP.NET and C# couple text boxes to calculate results entered. 我正在使用ASP.NET和C#对文本框来计算输入的结果。 Textbox2 has a value entered and on button click Textbox1 gets populated. Textbox2输入了一个值,然后单击按钮,填充Textbox1。 This works fine the first time I enter the value. 第一次输入值时,此方法效果很好。 But the second time I change the value in Textbox2, I see that the value is being assigned to Textbox1 while debugging on Button click, but doesn't show up on the screen. 但是第二次更改Textbox2中的值时,我看到在单击Button时进行调试时,该值已分配给Textbox1,但未在屏幕上显示。 I have many other controls and a master page. 我还有许多其他控件和一个母版页。 The textboxes are within an update panel. 文本框在更新面板中。
Can someone help me what's going on? 有人可以帮我怎么回事吗?
Here is the code: 这是代码:
<asp:TextBox ID="Textbox1" runat="server" Width="150px" TabIndex="6" MaxLength="8"></asp:TextBox> <asp:RequiredFieldValidator ID="RequiredFieldValidator7" runat="server" ControlToValidate="TextBox1" ErrorMessage="*"></asp:RequiredFieldValidator>
<asp:TextBox runat="server" ID="Textbox2" Width="150px" Visible="false"></asp:TextBox> 
<asp:ImageButton runat="server" ID="imgCalcAdjRate" ImageUrl="~/Resource/Images/calrate_0.bmp" onmouseout="this.src='../Resource/Images/calrate_0.bmp'" onmouseover="this.src='../Resource/Images/calrate_1.bmp'" Height="25px" Width="25px" Visible="false" onclick="imgCalcAdjRate_Click" />
Check the postback in the page_load function. 在page_load函数中检查回发。
if(!Page.IsPostBack) {
}
I think you are loosing information on post back. 我认为您正在丢失回发信息。 The data is changed, but it get reset on post back. 数据已更改,但会在回发时重置。
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