Set and Return System Variables
设置和返回系统变量
The Application object provides the SetSystemVariable and GetSystemVariable methods for setting and retrieving AutoCAD system variables. For example,to assign an integer to the MAXSORT system variable,use the following code:
Application对象提供了SetSystemVariable方法和GetSystemVariable方法来设置和提取系统变量。例如，下例代码将一个整数赋值给系统变量MAXSORT：
VB.NET
'' Get the current value from a system variable
Dim nMaxSort as Integer = Application.GetSystemVariable("MAXSORT")
'' Set system variable to new value
Application.SetSystemVariable("MAXSORT",100)
C#
// Get the current value from a system variable取值
int nMaxSort = System.Convert.ToInt32(Application.GetSystemVariable("MAXSORT"));
// Set system variable to new value赋值
Application.SetSystemVariable("MAXSORT",100);
VBA/ActiveX Code Reference
'' Get the current value from a system variable
Dim nMaxSort as Integer
nMaxSort = ThisDrawing.Getvariable("MAXSORT")
'' Set system variable to new value
ThisDrawing.Setvariable "MAXSORT",100