如何：获取命令行参数

本示例演示如何获取已传递给应用程序的命令行参数。

示例

下面的代码演示如何使用 Application 和 Startup 事件获取命令行参数。

<Application
    x:Class="CSharp.App"
    xmlns="https://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="https://schemas.microsoft.com/winfx/2006/xaml"
    Startup="app_Startup"
    >
</Application>

Namespace VisualBasic
    Partial Public Class App
        Inherits Application
        Private Sub app_Startup(ByVal sender As Object, ByVal e As StartupEventArgs)
            ' If no command line arguments were provided, don't process them
            If e.Args.Length = 0 Then
                Return
            End If

            ' Get command line arguments
            For Each argument As String In e.Args
                Select Case argument
                    Case "arg1"
                        ' Process arg 1
                    Case "arg2"
                        ' Process arg 2
                    Case "arg3"
                        ' Process arg 3
                End Select
            Next argument
        End Sub
    End Class
End Namespace

using System;
using System.Windows;

namespace CSharp
{
    public partial class App : Application
    {
        void app_Startup(object sender, StartupEventArgs e)
        {
            // If no command line arguments were provided, don't process them
            if (e.Args.Length == 0) return;

            // Get command line arguments
            foreach (string argument in e.Args)
            {
                switch (argument)
                {
                    case "arg1":
                        // Process arg 1
                        break;
                    case "arg2":
                        // Process arg 2
                        break;
                    case "arg3":
                        // Process arg 3
                        break;
                }
            }
        }
    }
}