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DevExpress WinForms Subscription拥有180+组件和UI库，能为Windows Forms平台创建具有影响力的业务解决方案。DevExpress WinForms能完美构建流畅、美观且易于使用的应用程序，无论是Office风格的界面，还是分析处理大批量的业务数据，它都能轻松胜任！

XtraUserControl 类替代标准的System.Windows.Forms.UserControl 组件，它提供了创建包含控件和组件的独立模块的功能，这些模块可以在整个应用程序中重复使用。

C#

//Create an XtraUserControl that represents a login form
public class LoginUserControl : XtraUserControl {
public LoginUserControl() {
LayoutControl lc = new LayoutControl();
lc.Dock = DockStyle.Fill;
TextEdit teLogin = new TextEdit();
TextEdit tePassword = new TextEdit();
CheckEdit ceKeep = new CheckEdit() { Text = "Keep me signed in" };
lc.AddItem(String.Empty, teLogin).TextVisible = false;
lc.AddItem(String.Empty, tePassword).TextVisible = false;
lc.AddItem(String.Empty, ceKeep);
this.Controls.Add(lc);
this.Dock = DockStyle.Fill;
}
}

//Show an XtraUserControl-based login form inside a dialog
private void simpleButton1_Click(object sender, EventArgs e) {
LoginUserControl myControl = new LoginUserControl();
DevExpress.XtraEditors.XtraDialog.Show(myControl, "Sign in", MessageBoxButtons.OKCancel);
}

VB.NET

'create an XtraUserControl that represents a login form
Public Class LoginUserControl
Inherits XtraUserControl

Public Sub New()
Dim lc As New LayoutControl()
lc.Dock = DockStyle.Fill
Dim teLogin As New TextEdit()
Dim tePassword As New TextEdit()
Dim ceKeep As New CheckEdit() With {.Text = "Keep me signed in"}
lc.AddItem(String.Empty, teLogin).TextVisible = False
lc.AddItem(String.Empty, tePassword).TextVisible = False
lc.AddItem(String.Empty, ceKeep)
Me.Controls.Add(lc)
Me.Dock = DockStyle.Fill
End Sub
End Class

'show an XtraUserControl-based login form inside a dialog
Private Sub simpleButton1_Click(ByVal sender As Object, ByVal e As EventArgs)
Dim myControl As New LoginUserControl()
DevExpress.XtraEditors.XtraDialog.Show(myControl, "Sign in", MessageBoxButtons.OKCancel)
End Sub

要在设计时添加XtraUserControls，请右键单击您的项目，然后选择 "Add DevExpress Item" 选项，这将调用Template Gallery，该库允许您添加空白XtraUserControls和DevExpress表单以及基于模板的表单。

与标准WinForms UserControl相比，XtraUserControl具有以下优点：

• 最终用户可以在悬停时滚动XtraUserControl内容，而无需首先关注它；
• 与布局和数据布局控件组件通信来传递正确的控件大小；
• 允许您直接从承载此容器的表单（可视继承）中为XtraUserControl（或其子）内部的控件使用智能标记和Designer对话框；
• 支持DevExpress皮肤，并确保整个应用程序的外观一致性。

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