showdialog wpf 如何关闭_WPF showDialog 关闭报错

using FirstFloor.ModernUI.Windows.Controls;

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Threading.Tasks;

using System.Windows;

using System.Windows.Controls;

using System.Windows.Data;

using System.Windows.Documents;

using System.Windows.Input;

using System.Windows.Media;

using System.Windows.Media.Imaging;

using System.Windows.Navigation;

using System.Windows.Shapes;

namespace Common.Helper

{

///

/// Interaction logic for frmMessage.xaml

///

public partial class frmMessage : ModernDialog

{

public string ReturnMsg = "";

public frmMessage(string msgTitle, string msg1, string msg2, string msgType, string msgDetail)

{

InitializeComponent();

try

{

// define the dialog buttons

this.Buttons = new Button[] { this.YesButton, this.NoButton,this.OkButton,this.CancelButton};

this.YesButton.Click += new System.Windows.RoutedEventHandler(this.btnYes_Click);

this.NoButton.Click += new System.Windows.RoutedEventHandler(this.btnNo_Click);

this.OkButton.Click += new System.Windows.RoutedEventHandler(this.btnConfirm_Click);

this.CancelButton.Click += new System.Windows.RoutedEventHandler(this.btnConfirm_Click);

this.Title = msgTitle;

this.lblMessage1.Text = msg1;

this.lblMessage2.Text = msg2;

if (msgType == "1")

{

this.YesButton.Visibility = Visibility.Hidden;

this.NoButton.Visibility = Visibility.Hidden;

this.OkButton.Visibility = Visibility.Visible;

}

else if (msgType == "2")

{

this.YesButton.Visibility = Visibility.Visible;

this.NoButton.Visibility = Visibility.Visible;

this.OkButton.Visibility = Visibility.Hidden; ;

}

if (msgDetail != "")

{

CancelButton.Visibility = Visibility.Visible;

CancelButton.Content = msgDetail;

}

}

catch (Exception ex)

{

string msg = Utility.UtilityHelper.GetFinalInnerException(ex).Message;

Utility.UtilityHelper.WriteLog("frmMessage " + msg, Utility.UtilityHelper.eLogCategory.UI, System.Diagnostics.TraceEventType.Error);

CommonHelper.CallMsgPopUp("Notice", CommonManager.GetMessage("30006"), "", "1", msg);

}

}

private void btnYes_Click(object sender, EventArgs e)

{

try

{

ReturnMsg = "YES";

this.DialogResult = true;

this.Close();

}

catch (Exception ex)

{

//this.Cursor = Cursors.Default;

string msg = Utility.UtilityHelper.GetFinalInnerException(ex).Message;

Utility.UtilityHelper.WriteLog("frmMessage/btnYes_Click " + msg, Utility.UtilityHelper.eLogCategory.UI, System.Diagnostics.TraceEventType.Error);

CommonHelper.CallMsgPopUp("Notice", CommonManager.GetMessage("30013"), "", "1", msg);

}

}

private void btnNo_Click(object sender, EventArgs e)

{

try

{

ReturnMsg = "NO";

this.DialogResult = true;

this.Close();

}

catch (Exception ex)

{

//this.Cursor = Cursors.Default;

string msg = Utility.UtilityHelper.GetFinalInnerException(ex).Message;

Utility.UtilityHelper.WriteLog("frmMessage/btnNo_Click " + msg, Utility.UtilityHelper.eLogCategory.UI, System.Diagnostics.TraceEventType.Error);

CommonHelper.CallMsgPopUp("Notice", CommonManager.GetMessage("30013"), "", "1", msg);

}

}

private void btnConfirm_Click(object sender, EventArgs e)

{

try

{

ReturnMsg = "OK";

this.DialogResult = true;

this.Close();

}

catch (Exception ex)

{

//this.Cursor = Cursors.Default;

string msg = Utility.UtilityHelper.GetFinalInnerException(ex).Message;

Utility.UtilityHelper.WriteLog("frmMessage/btnConfirm_Click " + msg, Utility.UtilityHelper.eLogCategory.UI, System.Diagnostics.TraceEventType.Error);

CommonHelper.CallMsgPopUp("Notice", CommonManager.GetMessage("30013"), "", "1", msg);

}

}

}

}

点击确认关闭窗口时 出现异常

异常信息如下

DialogResult can be set only after Window is created and shown as dialog.