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C#对称加密解密 StreamReader sd = new StreamReader(textBox1.Text); string srd = sd.ReadToEnd(); sd.Close(); finfo.Delete(); StreamWriter sw = new StreamWrite

可以打印txt文件 usingSystem; usingSystem.Collections.Generic; usingSystem.ComponentModel; usingSystem.Data; usingSystem.Drawing; usingSystem.Linq; usingSyst
C# 25