如何在旧进程完成后运行新进程，而不挂起应用程序

Question

我正在使用 Visual Studio 2010、C# (.Net 4)。

我有一个包含具有两列的 DataGridView 的应用程序。每列都包含我要运行的程序的参数。

现在我想从我的 C# 应用程序运行另一个具有数据网格视图中的参数的应用程序。另外，我想在运行新进程之前等待 3 秒。

我尝试了以下代码，但该过程是并行运行的，而不是一个接着一个：

private static Mutex mut = new Mutex();

public void runProgram(string executablePath, string argu1, string argu2)
{
    mut.WaitOne();

    ProcessStartInfo startInfo = new ProcessStartInfo();
    startInfo.WorkingDirectory = Path.GetDirectoryName(executablePath);
    startInfo.FileName = "CMD.exe";
    startInfo.Arguments = "/C " + set.ExecutablePath + " "
                            + argu1 + " " + argu2;

    try
    {
        Process p = Process.Start(startInfo);
        //p.WaitForExit();  // don't start the next process until the first finish -> not good, stuck the app
    }
    catch
    {
        MessageBox.Show("ERROR: unsuccess to run the applicition");
    }

    mut.ReleaseMutex();
}

private void bu_RunProgram_Click(object sender, EventArgs e)
{
    if (!File.Exists(set.ExecutablePath))
    {
        MessageBox.Show("The executable file doesn't exist\nPlease select right executable file in the settings form", "Error");
        return;
    }

    int progRow;
    foreach (DataGridViewRow dgvr in dg_ParametersToRun.Rows)
    {
        progRow = dgvr.Index;
        string argu1 = dg_ParametersToRun.Rows[progRow].Cells[0].FormattedValue.ToString();
        string argu2 = dg_ParametersToRun.Rows[progRow].Cells[1].FormattedValue.ToString();
        
        Thread threadProgRun= new Thread(() => runProgram(set.ExecutablePath, argu1, argu2));
        threadProgRun.Start();

        Thread.Sleep(3000); // Need to come to this line only when the previous thread finish...
    }
}

我以前从未使用过线程。

更新代码

根据建议：

// Aid variable
int paramRowIndex;

public void runNextParameters(object sender, EventArgs e)
{
    paramRowIndex++;
    if (paramRowIndex > dg_RunListTests.Rows.Count) return;   finish run all parameters

            //run the test
    string argu1 = dg_RunListTests.Rows[paramRowIndex].Cells[0].FormattedValue.ToString();
    string argu2 = dg_RunListTests.Rows[paramRowIndex].Cells[1].FormattedValue.ToString();
    runParameters(set.ExecutablePath, componenet, test);
}

public void runParameters(string executablePath, string argu1, string argu2)
{
    ProcessStartInfo startInfo = new ProcessStartInfo();
    startInfo.WorkingDirectory = Path.GetDirectoryName(executablePath);
    startInfo.FileName = "CMD.exe";
    startInfo.Arguments = "/C " + set.ExecutablePath +  " "
                        + argu1 + " " + argu2;
    try
    {
        Process p = Process.Start(startInfo);
        p.Exited += runNextParameters;
    }
    catch
    {
        MessageBox.Show("Unsuccess to run the test again");
    }
}

private void bu_RunParameters_Click(object sender, EventArgs e)
{
    if (!File.Exists(set.ExecutablePath))
    {
        MessageBox.Show("The executable file doesn't exist\nPlease select right     executable file in the settings form", Error);
        return;
    }

    paramRowIndex = 0;
    runNextParameters(sender, e);
}

Answer 1

可能的快速解决方案：启动一个 .bat 文件来启动两个（三个）程序。您必须创建另一个程序，该程序等待 3 秒才能在中间调用。