C ＃ use winexec to call exe program

Realization

1、 Add reference

using System.Runtime.InteropServices;// Call external DLL

2、 Definition win32API

// call exe
[DllImport("kernel32.dll")]
public static extern int WinExec(string exeName, int operType);

// Generate execution data 
private void generateExecuteData_ItemClick(object sender, ItemClickEventArgs e)
{
    WinExec(@"C:\ExecuteRecords\OrdersExecutionRecords.exe", 5);
}

WinExec explain

1、 Return value of method .

 Method success , return >31 The integer value ;
 Method failed , return ：

Return results	explain
0	Insufficient system memory or resources
ERROR_BAD_FORMAT	Illegal exe Program
ERROR_FILE_NOT_FOUND	File not found
ERROR_PATH_NOT_FOUND	path not found

2、 Parameters

Method has two parameters ： The first parameter lpCmdLine Is the path + Program 、 The second parameter nCmdShow For presentation .

2.1lpCmdLine

 Search order ：
1、 Parameter to specify the path 
2、 Application path 
3、 current path 
4、system route （ Callable GetSystemDirectory Method query ）
5、window route （ Callable GetWindowsDirectory Method query ）
6、 In the environment variables path route 

2.2uCmdShow

The details are as follows

Parameters	explain
11	Minimize forms
0	The form is hidden
3	Maximize form
6	After minimizing the form , Activate Z The upper window on the axis
9	Reinitialize the form
5	Show form
10
3	Activate forms , And maximize it
2	Activate forms , And minimize
7	Show form , And set to minimize
8	The size and position of the display form is the current size and position
4	The size and position of the display form is the most commonly used size and position
1	Activate and display a form . Whether the form is minimized or maximized , The system restores it to its original size and location . When first used , This value is recommended