C# 使用wpf进度条上载多个文件

我正在寻找C#和WPF的解决方案。 我尝试将多个文件上载到服务器。每次上传都应显示在进度条内的列表框中

我有一个WPF列表框模板，其中有一个进度条和一个文本块：

<ListBox Name="lbUploadList" HorizontalContentAlignment="Stretch" Margin="530,201.4,14.2,33.6" Grid.Row="1">
    <ListBox.ItemTemplate>
        <DataTemplate>
            <Grid Margin="0,2">
                <Grid.ColumnDefinitions>
                    <ColumnDefinition Width="*" />
                    <ColumnDefinition Width="100" />
                </Grid.ColumnDefinitions>
                <TextBlock Text="{Binding File}" />
                <ProgressBar Grid.Column="1" Minimum="0" Maximum="100" Value="{Binding Percent}" />
            </Grid>
        </DataTemplate>
    </ListBox.ItemTemplate>
</ListBox>


public class UploadProgress
{
    public string File { get; set; }
    public int Percent { get; set; }
}

List<UploadProgress> uploads = new List<UploadProgress>();
uploads.Add(new UploadProgress() { File = "File.exe", Percent = 13 });
uploads.Add(new UploadProgress() { File = "test2.txt", Percent = 0 });
lbUploadList.ItemsSource = uploads;

公共类上载进度
{
公共字符串文件{get；set；}
公共整数百分比{get；set；}
}
列表上传=新建列表（）；
Add（new UploadProgress（）{File=“File.exe”，Percent=13}）；
Add（newuploadprogress（）{File=“test2.txt”，百分比=0}）；
lbUploadList.ItemsSource=上传；

如何更新此列表中的进度条

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有人能帮我找到正确的解决办法吗？：）

您的UploadProgress类必须实现，以便在其值更改时通知绑定

现在，您只需更改列表中某个UploadProgress实例的百分比值，即可更改相应的ProgressBars值

也许您可以创建一个设置百分比值的方法，如：

private void Upload(UploadProgress upload)
{
    byte[] uploadBytes = File.GetBytes(upload.File);
    step = 100/uploadBytes.Length;
    foreach (byte b in uploadBytes)
    {
         UploadByte(b);
         upload.Percent += step; //after you implemented INotifyPropertyChanged correctly this line will automatically update it's prograssbar.
    }
}

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我真的不知道上传是如何详细工作的，所以这个方法只是向您展示如何处理百分比值。

首先，您需要在类上实现。然后，您应该能够将进度条值绑定到ViewModel，如下所示：

public class UploadProgress : INotifyPropertyChanged
{
    public event PropertyChangedEventHandler PropertyChanged;

    // This method is called by the Set accessor of each property. 
    // The CallerMemberName attribute that is applied to the optional propertyName 
    // parameter causes the property name of the caller to be substituted as an argument. 
    private void NotifyPropertyChanged([CallerMemberName] String propertyName = "")
    {
        if (PropertyChanged != null)
            PropertyChanged(this, new PropertyChangedEventArgs(propertyName));
    }

    private int percent = 0;
    public int Percent 
    {
        get { return percent; }
        set
        {
            if (value != percent)
            {
                percent = value;
                NotifyPropertyChanged();
            }
        }
    }
}

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我希望这能有所帮助。

请注意，您需要.NET Framework 4.5以上版本才能使用

CallerMemberName

。