TextBox can only enter numbers or Chinese common regular expressions and validation methods

Regular expression set for validating numbers
Verification Number: ^[0-9]*$
To verify N-bit numbers: ^\d{n}$
Verify that at least n digits: ^\d{n,}$
Verify the number of m-n bits: ^\d{m,n}$
Verify numbers starting with 0 and non 0: ^ (0|[ 1-9][0-9]*) $
Verify that there is a positive real number with two decimal places: ^[0-9]+ (. [ 0-9]{2})? $
Verify that there is a positive real number with 1-3 decimal places: ^[0-9]+ (. [ 0-9]{1,3})? $
Verify non-zero positive integers: ^\+? [1-9] [0-9]*$
To verify a nonzero negative integer: ^\-[1-9][0-9]*$
Validating non-negative integers (positive integers + 0): ^\d+$
Validates a non-positive integer (negative integer + 0): ^ ((-\d+) | ( 0+)) $

Validation of Chinese regular expression collection
Verify all Olympics languages: ^[\?-\? +$
Verify simplified and traditional: ^[\ a-\?] +$
Verified Simplified: ^[\-\ calls]+$

Use the following method

Bs

var reg =/^ (\d{1,4}) (-|\/) (\d{1,2}) \2 (\d{1,2}) $/;
var r = Str.match (reg);
if (r==null)

Alert (' Validation failed! ');

Or

if (!reg.test (str))

Alert (' Validation failed! ');

Cs

Using a Regex object to first reference System.Text.RegularExpressions
String s= "^[0-9]*$";//Regular expression
Regex reg=new Regex (s);
if (!reg. IsMatch (This.textbox1.text))
{
MessageBox.Show ("Please enter a number");
}

TextBox can only enter numbers or Chinese common regular expressions and validation methods