嵌套网格视图问题 [英] Nested Grid View Problem

问题描述

我在返回父级<code>gridview中数据绑定的标签的文本值时遇到问题.我需要使用文本值将其分配给子<code>gridview 中的select参数，但它始终抛出空引用.谁能看到下面的代码有问题吗?

I''m having problems returning the text value of a label that is databound in a parent <code>gridview. I need to use the text value to assign it to a select parameter in a child <code>gridview but it keeps throwing a null reference. Can anyone see a problem with the following code?

我有一个名为browsetopicsview的父Gridview，一个名为NestedPostCount 的子GridView和一个名为CreatedBy的databoud标签，这是我在子select的where子句中想要的陈述.  

I have a parent gridview called browsetopicsview, a child gridview called NestedPostCount a databoud label called CreatedBy which is what i want in the where clause of the child select statment.  

 Protected Sub BrowseTopicsView_RowDataBound(ByVal sender As Object, 
               ByVal e As System.Web.UI.WebControls.GridViewRowEventArgs) 
                                    Handles BrowseTopicsView.RowDataBound
        Dim s As SqlDataSource = CType(e.Row.FindControl("NestedPostCount"),
                                                                 SqlDataSource)
        Dim g As New Label
        g = CType(FindControl("CreadtedBy"), Label)
        Try
            s.SelectParameters(0).DefaultValue = g.Text
        Catch
            MsgBox("An error has occured in the database,
                         please try again later")
        End Try
End Sub

    

 Thanks,   

Chris  

Chris  

 

推荐答案

也许在属性分配中正确拼写了" CreadtedBy"?

Maybe "CreadtedBy" is spelled correctly on the property assignment?

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