Checking if a string is NULL or EMPTY is very common requirement in Powershell script. If we don’t do that we will end up with run time errors if we try to perform some operation on that string variable which is empty or null. So the question now is, how to check it? Well, belo...
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...
Check if a String is Null, Empty or Blank in Java Java: Check if String is Numeric How to Convert String to int in Java Reverse a String in Java Convert int to String in Java How to Split a String in Java: Different Examples
Example 2: Check if String with spaces is Empty or Null class Main { public static void main(String[] args) { // create a string with white spaces String str = " "; // check if str1 is null or empty System.out.println("str is " + isNullEmpty(str)); } // method check if ...
Right now I have an error if f.ParentID is null:DataSet1.TreeItemRow[] TreeItemRows = (from f in tidt where (f.ParentID == TreeItemId) select f).ToArray();I must continue if f.ParentID is null, I don't want to include null fileds in the array. What is the right synta...
7. try语句与if语句的区别: try和catch语句后面的花括号不能省略,但是if后面如果只有一行语句,花括号是可以省略的。 8. 看一个捕获异常的栗子: 写法就是酱紫的。红框框出来的是try和catch的用法栗子,紫色的框出来的是之前我们讲过的Scanner的用法。
// checking if the string is not blank "notEmptyTextString": not isBlank(" 1234"), "notEmptyTextStringTwo": !isBlank("") } Output: { "emptyString": true, "stringWithSpaces": true, "textString": false, "somePayloadValue": true, "nullSt...
In continuation of this post (Check String is NULL or EMPTY), I managed to successfully write up the if and else logic. However, my third logic does not work. My third logic is something like checking both empty fields at the same time and if they are empty, the error icon would pop...
Check if a string contains a letter Check if a user has FullControl on a folder Check if an array is in another bigger array using linq. check if an element that have Attribute with matching Value EXIST or NOT in XDocument?? Check if application being run from any Remote Desktop Connec...
Ex. Below is the function which gives you Nullable Decimal from object type. public static decimal? ToNullableDecimal(object val) { if (val is DBNull || val == null) { return null; } if (val is string && ((string)val).Length == 0) { return null; } return Convert.ToDecimal(val...