类型为"GridView"的控件"gvItemUpdate"必须放置在带有runat = server的表单标记中. [英] Control 'gvItemUpdate' of type 'GridView' must be placed inside a form tag with runat=server.

问题描述

大家好，

当我打印时，出现此错误-

控件'  gvItemUpdate'类型为 GridView'必须放在带有runat = server的表单标签中.

我该如何解决.

解决方案

 错误告诉您可能是将控件放在 aspx中(在 表单元素之外)的地方或作为< b> </  b  没有具有runat =   

类型为"GridView"的控件"gvItemUpdate"必须放置在表单标签内使用runat = server
当尝试将GridView控件导出为Word，Excel，PDF，CSV或任何其他格式时，会发生上述异常.

原因:
.NET编译器认为该控件未添加到表单中并被呈现.

解决方案:
告诉编译器该控件由overriding和VerifyRenderingInServerForm事件显式呈现.
像这样的东西:

 公共 覆盖  void  VerifyRenderingInServerForm(控制控件)
{
    /*  验证控件是否已呈现*/
} 

此错误/问题已报告& MS在此处建议的分辨率: RenderControl不适用于GridView [^ ]

可能是您的网格视图放错了位置，请保留在您的代码runat ="server"中，或者检查一次您的代码是否位于标记内r >

Hello all,

When i go to print, I am getting this error -

Control 'gvItemUpdate' of type 'GridView' must be placed inside a form tag with runat=server.

How can i solve it.

解决方案

The error tells that you probably either misplaced your control in aspx (outside of form element) or that  as<b></b>px form element does not have runat="server"

Control ''gvItemUpdate'' of type ''GridView'' must be placed inside a form tag with runat=server
The above exception occurs when one tries to export a GridView control to Word, Excel, PDF, CSV or any other formats.

Reason:
.NET compiler thinks that the control is not added to the form and is rendered.

Solution:
Tell compiler that the control is rendered explicitly by overriding the VerifyRenderingInServerForm event.
Something like:

public override void VerifyRenderingInServerForm(Control control)
{
    /* Verifies that the control is rendered */
}

This Error/issue reported & resolution suggested by MS here: RenderControl doesn''t work for GridView[^]

may be your gridview is misplaced please keep in ur code runat="server" or check once your code inside tag r not

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