如何检查网格视图数据绑定事件中的行是否为真?
How to check rows are true in grid view databound event?
我有一个带有一个按钮的 Gridview,如果所有行都为真或选中,则按钮状态设置为启用,否则它将被禁用。
这是我的代码,但它对我不起作用。
If e.Row.RowType = DataControlRowType.DataRow Then
Dim ckbox As CheckBox = CType(e.Row.FindControl("workfinished"), CheckBox)
If ckbox.Checked = True Then
btnFinishedAllWork.Enabled = True
End If
End If
您应该使用下面提到的示例代码来实现您的要求。
重点如下。
- 始终在 Page_Load 事件
的页面生命周期开始时将按钮的启用状态设置为 true
- 然后,当绑定网格数据行时,发生在 Page_Load 事件之后,您可以在取消选中任何复选框时将按钮状态设置为禁用
VB.NET 下面的代码改变按钮状态
''In Page_Load event set the button to enabled state and then change its state later
''in page life cycle depending on if a check box is unchecked.
Protected Sub Page_Load(sender As Object, e As System.EventArgs) Handles Me.Load
btnFinishedAllWork.Enabled = True
End Sub
Protected Sub OnRowDataBound(sender As Object, e As GridViewRowEventArgs)
If e.Row.RowType = DataControlRowType.DataRow Then
Dim ckbox As CheckBox = CType(e.Row.FindControl("workfinished"), CheckBox)
''only change the state of button any one of the check boxes is unchecked
If ckbox.Checked = False Then
btnFinishedAllWork.Enabled = False
End If
End If
End Sub
我有一个带有一个按钮的 Gridview,如果所有行都为真或选中,则按钮状态设置为启用,否则它将被禁用。 这是我的代码,但它对我不起作用。
If e.Row.RowType = DataControlRowType.DataRow Then
Dim ckbox As CheckBox = CType(e.Row.FindControl("workfinished"), CheckBox)
If ckbox.Checked = True Then
btnFinishedAllWork.Enabled = True
End If
End If
您应该使用下面提到的示例代码来实现您的要求。
重点如下。
- 始终在 Page_Load 事件 的页面生命周期开始时将按钮的启用状态设置为 true
- 然后,当绑定网格数据行时,发生在 Page_Load 事件之后,您可以在取消选中任何复选框时将按钮状态设置为禁用
VB.NET 下面的代码改变按钮状态
''In Page_Load event set the button to enabled state and then change its state later
''in page life cycle depending on if a check box is unchecked.
Protected Sub Page_Load(sender As Object, e As System.EventArgs) Handles Me.Load
btnFinishedAllWork.Enabled = True
End Sub
Protected Sub OnRowDataBound(sender As Object, e As GridViewRowEventArgs)
If e.Row.RowType = DataControlRowType.DataRow Then
Dim ckbox As CheckBox = CType(e.Row.FindControl("workfinished"), CheckBox)
''only change the state of button any one of the check boxes is unchecked
If ckbox.Checked = False Then
btnFinishedAllWork.Enabled = False
End If
End If
End Sub