您可以为此目的使用UCase 函数.
这里给出一个例子

http://www.chennaiiq.com/developers/reference/visual_basic/functions/ucase.asp [ ^ ]

You can use UCase function for this purpose.
An example is given here

http://www.chennaiiq.com/developers/reference/visual_basic/functions/ucase.asp[^]

使用UCase

Use the UCase

字符串函数.
此处 [ ^ ]和此处 [ ^ ]在该功能上更多.

string function.
Here[^] and here[^] is more on the function.