The string.IsNullOrEmpty() method is used to check if a string has null or string.Empty value in it or not in C#.
Input: Enter the string: AppleOutput: The entered string is null or empty? : FalseProgram 1: Check If a String is Empty or NullIn this program, we will learn how to check if a string is empty or null using a relational operator....
Use thelengthProperty to Check if the String Is Empty in JavaScript Here is another way to check JavaScript empty string. If the length is zero, then we know that the string is empty. Example: letstr1='Hello world!';letstr2='';letstr3=4;console.log(str1.length===0)console.log(str...
Check if a string is null or empty in XSLT 多条件查询 string.Format("/root/deviceList//item/guid[{0}]", strBuilder.ToString()) "/root/deviceList//item/guid[text()=\"h\" or text()=\"a\" or text()=\"c\"]"谓词嵌套var nodes = xmlDoc.SelectNodes(string.Format("/root/device...
// Scala program to check whether // a string is empty or not object Sample { def main(args: Array[String]) { val str1 = new StringBuilder("This is india"); val str2 = new StringBuilder(""); if (str1.isEmpty) println("string 'str1' is empty"); else println("string 'str1'...
std::string testStr = "123.45"; std::cout << "Using Custom Parsing Method: " << isNumberCustom(testStr) << std::endl; return 0; } Explanation: isNumberCustom manually checks each character of "123.45" to determine if it is a valid number. It uses std::isdigit() to check if a ch...
C# for determining if AM or PM C# has GetDate() function? c# Hashtable getting values by Key name C# Help Assigning a boolean variable based on condition C# how to check char is null or empty c# if condition string length count C# IIF check int and return string if NullorEmpty C# JSO...
usingSystem;classCheck{staticvoidMain(){int[]myArr=newint[]{};if(myArr==null||myArr.Length==0){Console.WriteLine("array is empty");}else{Console.WriteLine("array is not empty");}}} Note: The string.Length property returns the total number of elements in a given Array. ...
can you capture the existing text using "ctrl A"? etc etc . All respondents have provided code that helps you resolve exactly what it says in the subject heading "How to check if a string contains text or is it empty?". There is obviously more to that ... ...
If the item is a file that ends with either a .vb or .cs extension, the code loads the file contents into a string variable using a StreamReader. Then the code scans the file contents using the String.Contains method for each bad word, one at a time. If the code finds a bad word...