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[英]Show selection in WPF RichTextBox in ElementHost after losing focus
[英]wpf ElementHost doesn't show
我對這個ElementHost
東西有很多問題。 有人可以看看我有什么,讓我知道發生了什么或為什么沒有顯示? 一切似乎都有效,只是我看不到屏幕上顯示/刷新的ElementHost
(用戶控件)。
Test.cs.designer
this.TestHost.Dock = System.Windows.Forms.DockStyle.Fill;
this.TestHost.Location = new System.Drawing.Point(5, 5);
this.TestHost.Name = "TestHost";
this.TestHost.Size = new System.Drawing.Size(1139, 213);
this.TestHost.TabIndex = 1;
this.TestHost.Text = "elementHost1";
this.TestHost.Child = this.testview1;
this.TestHost.Visible = true;
test.cs中
private void btnTest_Click(object sender, EventArgs e)
{
LoadView(item);
}
public void LoadView(Person item)
{
TestHost.Child = this.testview1; //name given when drag/drop .. should still reference wpf TestView xaml
try
{
if (item != null)
{
// TestView is WPF xaml/View
TestView view = new TestView();
view = (TestView) TestHost.Child;
//TestViewModel is a viewmodel
TestViewModel vm = (TestViewModel) view.DataContext;
//load items from viewmodel
vm.LoadItems(item);
}
TestHost.Visible = true;
}
catch(Exception ex)
{
ex.ToString();
}
}
從您的代碼中看起來您將elementhost子元素設置為Class而不是它的實例(無法編譯)。 我的問題是TestView實例來自哪里?
TestHost.Child = TestView;
要調試,在try / catch塊中更改'ex.ToString()'以顯示消息框; 如果發生異常,您就會意識到這一點。
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