RenderControl输出html遇到的问题

最新推荐文章于 2025-11-25 10:27:20 发布

原创最新推荐文章于 2025-11-25 10:27:20 发布 · 655 阅读

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文章标签：

#html #asp.net #server #parameters #tags #工具

本文介绍了一个常见的ASP.NET问题，即GridView控件放置于服务器表单之外导致的渲染错误，并提供了解决方案，通过添加重载方法来确保控件正确渲染。

当我直接在后台用GridView gv=new GridView();gv.RenderControl(htmlwrite);没有问题，但是如果我从工具直接拖一个GridView到设计页面，在后台gv.RenderControl(htmlwrite);就会出现 Control 'GridViewTotal' of type 'GridView' must be placed inside a form tag with runat =server.这个错误！
解决的办法：在后台添加一个重载方法。
public override void VerifyRenderingInServerForm(Control control)
    {
        /* Confirms that an HtmlForm control is rendered for the specified ASP.NET
           server control at run time. */
    }

public virtual void VerifyRenderingInServerForm(System.Web.UI.Control control)
    Member of System.Web.UI.Page

Summary:
Confirms that an System.Web.UI.HtmlControls.HtmlForm control is rendered for the specified ASP.NET server control at run time.

Parameters:
control: The ASP.NET server control that is required in the System.Web.UI.HtmlControls.HtmlForm control.

Exceptions:
System.Web.HttpException: The specified server control is not contained between the opening and closing tags of the System.Web.UI.HtmlControls.HtmlForm server control at run time.