c# - 如何在我的 winform 进度条中显示状态？

Question

在将数据从一个表传输到另一个表时，我想要一个进度条在我的表单上显示状态。我尝试了一些方法，但它不起作用。

if (dataGridView1.RowCount - 1 == no_Of_rows)
{
    progressBar1.Value = 100;
    dataGridView1.Visible = true;
}
else
{
    progressBar1.Value = 50;
    dataGridView1.Visible = false;
}

Answer 1

这是一个如何使用后台工作程序的示例。

private BackgroundWorker worker;
    public Form1()
    {
        InitializeComponent();


        this.worker = new BackgroundWorker
            {
                WorkerReportsProgress = true
            };
        worker.DoWork += WorkerOnDoWork;
        worker.ProgressChanged += WorkerOnProgressChanged;
        worker.RunWorkerCompleted += delegate
            {
                //Set the value of the progressbar to the maximum value if the work is done
                this.progressBar1.Value = this.progressBar1.Maximum;
            };
        worker.RunWorkerAsync();
    }

    private void WorkerOnProgressChanged(object sender, ProgressChangedEventArgs e)
    {
        //Set the value of the progressbar, or increment it.
        //You can use the e.ProgressPercentage to get the value you set in the DoWork-Method
        //The e.UserState ist a custom-value you can pass from the DoWork-Method to this Method
        this.progressBar1.Increment(1);
    }


    private void WorkerOnDoWork(object sender, DoWorkEventArgs e)
    {
        // Do you stuff here. Here you can tell the backgroundworker to report the progress like.
        this.worker.ReportProgress(5);
        //You can not access properties from here, so if you want to pass a value or something else to the
        //progresschanged-method you have to use e.Argument. 

    }

这是一个winforms应用程序。在表单上只有一个名为 progressbar1 的进度条

Answer 2

使用进度条窗口控件

供参考： http: //www.codeproject.com/Articles/449594/Progress-Bars-Threads-Windows-Forms-and-You