Asp.net 如何使用条件以编程方式更改超链接文本？

我的aspx页面中有此模板字段：

如果cell9不等于Catcher，但我得到的对象引用错误未设置为对象实例，则我必须将超链接文本更改为N/A。

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如果不满足上述条件，如何更改超链接文本？

要获取超链接，需要在当前行中找到控件，而不是在整个gridview中，如下所示

Sub GridView1_RowDataBound(ByVal sender As Object, ByVal e As GridViewRowEventArgs) Handles GridView1.RowDataBound
   If e.Row.RowType = DataControlRowType.DataRow Then
      Dim fgr As HyperLink = DirectCast(e.Row.FindControl("fgr"), HyperLink)
      If e.Row.Cells(2).Text = "Catcher" Then
        e.Row.Cells(9).Enabled = True
      Else                       
        fgr.Text = "N/A"
      End If
   End If
 End Sub

Sub GridView1_RowDataBound(ByVal sender As Object, ByVal e As GridViewRowEventArgs) Handles GridView1.RowDataBound
   If e.Row.RowType = DataControlRowType.DataRow Then
      Dim fgr As HyperLink = DirectCast(GridView1.FindControl("fgr"), HyperLink)
      If e.Row.Cells(2).Text = "Catcher" Then
        e.Row.Cells(9).Enabled = True
      Else                       
        fgr.Text = "N/A"
      End If
   End If
 End Sub

Sub GridView1_RowDataBound(ByVal sender As Object, ByVal e As GridViewRowEventArgs) Handles GridView1.RowDataBound
   If e.Row.RowType = DataControlRowType.DataRow Then
      Dim fgr As HyperLink = DirectCast(e.Row.FindControl("fgr"), HyperLink)
      If e.Row.Cells(2).Text = "Catcher" Then
        e.Row.Cells(9).Enabled = True
      Else                       
        fgr.Text = "N/A"
      End If
   End If
 End Sub