我有这个标记:
<asp:DetailsView ID="dvDatabase" OnModeChanging="dvDatabase_ModeChanging">
<HeaderTemplate>
<asp:Button ID="btnView" runat="server" CausesValidation="False" CommandName="Cancel"
Text="View" CssClass="btn btn-primary" Visible="false" />
<asp:Button runat="server" CausesValidation="False" CommandName="Edit"
Text="Edit" CssClass="btn btn-success" ID="btnEdit" />
<asp:Button runat="server" CausesValidation="False" CommandName="Delete"
Text="Delete" CssClass="btn btn-danger" />
</HeaderTemplate>
...
然后我有这个 C#:
protected void dvDatabase_ModeChanging(object sender, DetailsViewModeEventArgs e)
{
bool isEdit = DetailsViewMode.Edit == e.NewMode;
DetailsView view = (DetailsView)sender;
Button viewButton = (Button)view.FindControl("btnView");
Button editButton = (Button)view.FindControl("btnEdit");
viewButton.Visible = isEdit;
editButton.Visible = !isEdit;
}
我已经进行了一些调试,并且Visible
属性设置正确,但我从未看到按钮发生变化。我点击了编辑按钮,我处于编辑模式,但编辑按钮仍然显示,查看按钮仍然隐藏。我尝试通过dvDatabase.FindControl
直接找到按钮,而不是使用object sender
变量,但这也不起作用。我试图根据ID
标记中的属性来引用带有变量的按钮,但是btnView
变量btnEdit
/属性不存在。这是怎么回事?
编辑:我按照蒂姆的建议切换到OnModeChanged
,但按钮仍然没有改变。这是我现在的 C#:
protected void dvDatabase_ModeChanged(object sender, EventArgs e)
{
DetailsView view = /*(DetailsView)sender*/dvDatabase;
bool isEdit = DetailsViewMode.Edit == view.CurrentMode;
LinkButton viewButton = (LinkButton)view.FindControl("btnView");
LinkButton editButton = (LinkButton)view.FindControl("btnEdit");
viewButton.Visible = isEdit;
editButton.Visible = !isEdit;
}
我尝试使用object sender
以及dvDatabase
类变量,但似乎都没有效果。