C#全半角转换,包括两个方法：将全角数字（或字母）转换为半角；将半角数字（或字母）转换为全角。开发环境DotNet2.0-Width-C# conversion, including the two methods: the full-width number (or letter) to a half-width　the half-width numbers (or letters) to full-width. Development Environment DotNet2.0