C#正则表达式应用范例

Regex objNumberPattern =new Regex("(" + strValidRealPattern +")|(" + strValidIntegerPattern + ")");

return !objNotNumberPattern.IsMatch(strNumber) &&

!objTwoDotPattern.IsMatch(strNumber) &&

!objTwoMinusPattern.IsMatch(strNumber) &&

objNumberPattern.IsMatch(strNumber);

}

// Function To test for Alphabets.

public bool IsAlpha(String strToCheck)

{

Regex objAlphaPattern=new Regex("[^a-zA-Z]");

return !objAlphaPattern.IsMatch(strToCheck);

}

// Function to Check for AlphaNumeric.

public bool IsAlphaNumeric(String strToCheck)

{

Regex objAlphaNumericPattern=new Regex("[^a-zA-Z0-9]");

return !objAlphaNumericPattern.IsMatch(strToCheck);

}

}

There is another simple way to perform these validation think of it while the next article comes.