1   public bool IsChinaString(string CString) 2         { 3           bool BoolValue = false; 4           for (int i = 0; i < CString.Length; i++) 5             { 6               if (Convert.ToInt32(Convert.ToChar(CString.Substring(i, 1)))< Convert.ToInt32(Convert.ToChar(128))) 7                 { 8                   BoolValue = false; 9                  }10                  else11                 {12 13                     return BoolValue = true;14                 }15                 }16 17               return BoolValue;18 19         }

 页面中使用jquery判断文本框先输入的中文还是英文的判断

1   var c = $("#txtStreet").val().charCodeAt(0); 2                              if (c >= 65 && c <= 90 || c >= 97 && c <= 122) { 3                               4                                  return { 5                                      label: item.StreetName_EN + "," + item.StreetName1, 6                                      value: item.StreetName_EN + "," + item.StreetName1, 7                                       } 8                                } else { 9                              10                                  return {11                                      label: item.StreetName1 + "," + item.StreetName_EN,12                                      value: item.StreetName1 + "," + item.StreetName_EN,13                                  }