asp.net - 使用空值提交的 html 表单

Question

我在 asp.net 页面中有一个带有 Method attribute="post" 和 on Codebehinde 的小表单，我想访问这样的表单值： string val = Request.form["field"]; 但是当我放置断点并检查时，它返回空值。但我已将值放入输入文本框中并按下提交按钮。我不明白为什么它返回null。任何人都可以解释什么是问题。

Answer 1

You are are using runat="server" on the textbox so the name of it in the Form collection will be probably be something like "ctl00_srchtxtx".

Make the <input> into <asp:TextBox> and use string val = srchtxtx.Text; instead. You should also add runat="server" to your form, or you will probably get other issues.

Or if this cannot be a server form remove runat="server" from the <input>.

Answer 2

假设 runat = "server" 为：

字符串 val = Request.Form[srchtxtx.UniqueID];