即使IsEnabled属性设置为false，也不禁用Excel按钮

问题描述

在单击按钮时，我希望禁用单击的按钮，并在执行过程后重新启用它。

虽然看起来很简单，但由于整个过程成功执行的原因，但并未禁用该按钮。在特定情况下会禁用它，而不是在单击按钮开始时禁用它。

下面是按钮的XAML代码

<Button 
    x:Name="PreviewReportButton"
    Click="PreviewExcelReportButton_Click"
    Background="{StaticResource ExportExcelButtonColor}"
    BorderBrush="{StaticResource ExportExcelButtonColor}"
    Focusable="False"
    IsEnabled="False"
    Width="80"
    Height="Auto"
    Margin="450,0"
    FontSize="9"
    FontWeight="DemiBold"
    HorizontalAlignment="Left"
    VerticalAlignment="Center"
    Grid.Column="3"
    Grid.Row="5"
    Cursor="Hand"
    VerticalContentAlignment="Center"
    HorizontalContentAlignment="Center">
    <TextBlock TextAlignment="Center">Button 1</TextBlock>
</Button>

c＃VS 2019中的.cs文件代码

private void PreviewExcelReportButton_Click(object sender,RoutedEventArgs e)
{
    var btn_excel = (Button)sender;
    btn_excel.IsEnabled = false;
    //PreviewReportButton.IsEnabled = false; This is the same button as btn_excel (the button I want to click)

    Debug.WriteLine("Button must be disabled");

    try
    {
        //Check if file is open
        int IsMacroFileOpen = CheckFileIsOpen($@"{path}file_1.xlsm");
        int IsReportFileOpen = CheckFileIsOpen($@"{path}file_2.xlsm");
        int IsXLSXFileOpen = CheckFileIsOpen($@"{path}file_3.xlsx");

        Debug.WriteLine(IsMacroFileOpen);
        Debug.WriteLine(IsReportFileOpen);
        Debug.WriteLine(IsXLSXFileOpen);

        if (new[] { 1,2 }.Contains(IsMacroFileOpen) || new[] { 1,2 }.Contains(IsReportFileOpen) || new[] { 1,2 }.Contains(IsXLSXFileOpen))
        {
            btn_excel.IsEnabled = true;
            return;
        }

        Mouse.OverrideCursor = Cursors.Wait;

        //Step 1: Create copy of standard report file
        CreatecopyreportserverNameDB($@"{path}file_1.xlsm");

        //Step 2: Run macro
        ExecuteExcelMacro($@"{path}file_2.xlsm");

        //Step 3: Open a copy of the xlsx updated file
        //Approach 1
        Microsoft.Office.Interop.Excel.Application ExcelApp = new Microsoft.Office.Interop.Excel.Application();

        ExcelApp.displayAlerts = false;
        ExcelApp.Visible = true;

        Microsoft.Office.Interop.Excel.Workbook ExcelWorkBook = ExcelApp.Workbooks.Add($"{path}file_3.xlsx");
    }
    catch (Exception)
    {
        this.Effect = new BlurEffect();
        bool? Result = new CustomMessageBox($"Unable to execute Excel button.\nPlease contact application support","Error produced",MessageType.Error,MessageButtons.Ok).ShowDialog();
        if (Result.Value)
        {
            this.Effect = null;
            return;
        }
        else
        {
            this.Effect = null;
            return;
        }
    }
    finally
    {
        Mouse.OverrideCursor = null;
        btn.IsEnabled = true;
    }
}

不要对每种方法（CreatecopyreportserverNameDB，ExecuteExcelMacro）的功能关注太多，因为它与问题无关。整个功能正常。不起作用的是我的代码顶部的按钮禁用。当我单击按钮时，由于我使用Mouse.OverrideCursor = Cursors.Wait;，因此光标会变为 Wait 。奇怪的是，仅当文件被CheckFileIsOpen捕获时，该按钮才被禁用。如果没有打开文件，则永远不会禁用该按钮。而且我敢肯定，我只能在班级顶部禁用该按钮，而只能在课程结束时启用它。

此外，您还会注意到，如果Debug.Writeline成功执行并且确实将该行写为输出，则我要写一个IsEnabled = false;。尽管除非打开文件并被方法CheckFileIsOpen捕获，否则从不禁用该按钮。

很抱歉，我已经提出了这样一个“虚拟”想法的问题，因为对我而言这很明显。但是我不明白为什么按钮的IsEnabled会发生这种情况。抱歉，这太简单了，但我无法弄清楚是怎么回事。

问题似乎出在我执行第二种方法ExecuteExcelMacro时 该方法的代码

public void ExecuteExcelMacro(string sourceFile)
{
    var destinationFile = @"file_1";
    Microsoft.Office.Interop.Excel.Application ExcelApp = new Microsoft.Office.Interop.Excel.Application();

    ExcelWorkBook = ExcelApp.Workbooks.Open(sourceFile);

    string macro = "ThisWorkbook.Run_Code";
    try
    {
        ExcelApp.Run(macro);
        Debug.WriteLine("Macro: " + macro + " executed successfully");
    }
    catch (Exception)
    {
        this.Effect = new BlurEffect();
        bool? Result = new CustomMessageBox($"Unable to Run Macro: {macro}","Cannot execute Macro",MessageButtons.Ok).ShowDialog();
        if (Result.Value)
        {
            this.Effect = null;
            return;
        }
        else
        {
            this.Effect = null;
            return;
        }
        //Debug.WriteLine("Unable to Run Macro: " + macro + " Exception: " + ex.Message);
    }

    ExcelApp.displayAlerts = false;
    ExcelApp.Visible = false;

    ExcelWorkBook.SaveAs($@"{path}{destinationFile}",Microsoft.Office.Interop.Excel.XlFileFormat.xlOpenXMLWorkbook,Type.Missing);
    ExcelWorkBook.Close(0);
    ExcelApp.Quit();

    if (ExcelWorkBook != null) { System.Runtime.InteropServices.Marshal.ReleaseComObject(ExcelWorkBook); }
    if (ExcelApp != null) { System.Runtime.InteropServices.Marshal.ReleaseComObject(ExcelApp); }
}

解决方法

在创建ExcelApp实例后，在ExecuteExcelMacro（）方法中 制作 ExcelApp.ScreenUpdating=false; ExcelApp.Calculation=manual; ExcelApp.DisplayAlerts=false; 。

未创建ExcelApp.Visible=false;

然后在PreviewExcelReportButton_Click（）方法的最后一步中，执行 Mouse.OverrideCursor = Cursors.Arrow;