asp.net/VB.net:FindControl，而不是按ID按ControlType

我需要在asp.net应用程序的中继器中找到一个控件

目前我正在使用

FindControl（“IdOfControl”）

，这很好

但我需要按其类型找到控件（

ImageButton

）

我当前的代码：

For Each rptItem As RepeaterItem In myRepeater.Items
    Dim imgBtn As ImageButton = TryCast(rptItem.FindControl("myImageBtn"), ImageButton)
    AddHandler imgBtn.Click, AddressOf imgBtn_Click
Next

我在寻找这样的东西：

For Each rptItem As RepeaterItem In myRepeater.Items
    Dim imgBtn As ImageButton = TryCast(rptItem.FindControl(TypeOf ImageButton), ImageButton)
    AddHandler imgBtn.Click, AddressOf imgBtn_Click
Next

有人能帮忙吗？

试试这个

你的要求

For Each ri As RepeaterItem In myRepeater.Items
    For Each cn As Control In ri.Controls
        If cn.[GetType]() = GetType(ImageButton) Then
            Response.Write("ss")
            Response.Write(vbLf)
        End If
    Next
Next

e.g
    For Each cn As Control In form1.Controls
        If cn.[GetType]() = GetType(ImageButton) Then
            Response.Write("ss")
        End If
    Next

---

我不确定您的中继器是否有嵌套控件，其中包含ImageButtons。下面是递归代码：

Public Function FindControl(ByVal ParentControl As Control) As Control
        Dim ReturnedControl As New Control
        For Each CurrentControl As Control In ParentControl.Controls
            CurrentControl.[GetType]() = GetType(ImageButton) Then
                ReturnedControl = CurrentControl
                Exit For
            End If
            If (CurrentControl.HasControls) Then
                ReturnedControl = FindControl(CurrentControl)
            End If
        Next
        Return ReturnedControl
    End Function

---

上述函数将在中继器控件中找到作为参数传入的第一个ImageButton。希望这有帮助

Sanjay Goswami发布了一个很好的解决方案

我不得不改变主意

If cn.[GetType]() = GetType(ImageButton) Then

到

加上我的东西

完整的工作代码：

For Each rptItem As RepeaterItem In myRepeater.Items
     For Each cn As Control In rptItem.Controls
            If cn.GetType().Equals(GetType(ImageButton)) Then
                AddHandler (TryCast(rptItem.FindControl(cn.ID), ImageButton)).Click, AddressOf imgBtn_Click
            End If
     Next
Next

---

这里有一个C#解决方案。谢谢这将引导我找到正确的代码。请检查我的答案，以获得完整的工作代码，并将此文章作为草稿。我想在表单中找到控件，并制作一个地图布局，这有助于实现此目的

For Each rptItem As RepeaterItem In myRepeater.Items
     For Each cn As Control In rptItem.Controls
            If cn.GetType().Equals(GetType(ImageButton)) Then
                AddHandler (TryCast(rptItem.FindControl(cn.ID), ImageButton)).Click, AddressOf imgBtn_Click
            End If
     Next
Next

    For Each cn As Control In Me.Controls
        If (cn.[GetType]().Equals(GetType(Button))) Then
            Dim str1 As String = cn.Text
            ds = fobj.getrecord("select shopid from tbstallbooking where shopid='" + str1 + "'")
            n = ds.Tables(0).Rows.Count
            If (n > 0) Then
                cn.BackColor = Color.Red
                cn.Enabled = False
                ds.Clear()
            Else
                cn.BackColor = Color.Green
                cn.Enabled = True
            End If
        End If
    Next