实现效果:
知识运用:
Regex类的Replace()方法:用于替换在指定字符串内匹配正则式的字符串为某字符串
public static string Replace(string input,string pattern,string replacement)
input 要搜索匹配项的字符串
pattern 要匹配的正则表达式模式
replacement 要替换的为结果的字符串
实现代码:
private void button1_Click(object sender, EventArgs e) { string result = System.Text.RegularExpressions. Regex.Replace(textBox1.Text,"[A-Za-z]+",textBox2.Text); MessageBox.Show("原字符串:\n"+textBox1.Text+"\n"+ "替换为:\n"+textBox2.Text+"\n"+"替换后:\n"+result); }