protected void Button1_Click(object sender, EventArgs e) { string str=ConfigurationManager.ConnectionStrings["sqlstr"].ConnectionString; using (SqlConnection sqlcon = new SqlConnection(str)) { using (SqlCommand sqlcom = sqlcon.CreateCommand()) { sqlcom.CommandText = "select * from T_Blog where Uname='Mary'"; sqlcon.Open(); SqlDataReader reader = sqlcom.ExecuteReader(); if (reader.Read()) { string content = reader["Bcontent"].ToString(); Regex regex = new Regex("<.+?>"); content = regex.Replace(content, ""); this.TextBox1.Text = content; } } } } Regex regex = new Regex("<.+?>"); content = regex.Replace(content, ""); this.TextBox1.Text = content; } } } } //声明一个不可变的正则表达式