asp.net - 类型为 'ctl00_TextBox1'的控件 'TextBox'必须放置在带有runat = server的表单标记中

Question

当添加在服务器上运行的表单时，将有两种在服务器上运行的表单，并且发生另一个错误。有人可以给我一个主意吗？提前感谢。

错误的详细信息如下。

类型为'TextBox'的控件'ctl00_TextBox1'必须放置在带有runat = server的表单标记中。
说明:执行当前Web请求期间发生未处理的异常。请查看堆栈跟踪，以获取有关错误及其在代码中起源的更多信息。

异常详细信息:System.Web.HttpException:类型为'TextBox'的控件'ctl00_TextBox1'必须放置在带有runat = server的表单标记中。

源错误:

当前Web请求的执行期间生成了未处理的异常。可以使用下面的异常堆栈跟踪来标识有关异常的来源和位置的信息。

堆栈跟踪:

[HttpException (0x80004005): Control 'ctl00_TextBox1' of type 'TextBox' must be placed inside a form tag with runat=server.]
System.Web.UI.Page.VerifyRenderingInServerForm(Control control) +2052287
System.Web.UI.WebControls.TextBox.AddAttributesToRender(HtmlTextWriter writer) +49
System.Web.UI.WebControls.WebControl.RenderBeginTag(HtmlTextWriter writer) +17
System.Web.UI.WebControls.TextBox.Render(HtmlTextWriter writer) +17
System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +25
System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter) +121
System.Web.UI.Control.RenderControl(HtmlTextWriter writer) +22
System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) +199
System.Web.UI.Control.RenderChildren(HtmlTextWriter writer) +20
System.Web.UI.Control.Render(HtmlTextWriter writer) +7
System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +25
System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter) +121
System.Web.UI.Control.RenderControl(HtmlTextWriter writer) +22
System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) +199
System.Web.UI.Control.RenderChildren(HtmlTextWriter writer) +20
System.Web.UI.Page.Render(HtmlTextWriter writer) +26
System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +25
System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter) +121
System.Web.UI.Control.RenderControl(HtmlTextWriter writer) +22
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +2558

Version Information: Microsoft .NET Framework Version:2.0.50727.1873; ASP.NET Version:2.0.50727.1433

Answer 1

错误指出了问题

正确的

<form id="frm" runat="server">
    <asp:TextBox id="txt" runat="server" />
</form>

不正确的

<asp:TextBox id="txt" runat="server" />
<form id="frm" runat="server">
</form>