Introduction to UiPath string checking with samples

In UiPath Studio development, there are many times when you need to check and determine strings.

In this article, we will show you how to check if a string contains null, empty, or blank space, or if it matches a specified string, with samples.

 

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Check if a string is null, empty, or blank-paced.

Check if the string is null or empty (IsNullorEmpty)

To check if a string is null or empty, use IsNullorEmpty.

 

Code to check if a variable of type String “str1” is null or empty

String.IsNullOrEmpty(str1)

• First value in (): string to be checked

 

 

・Sample Process

 

・Execution result

 

Check if the string is null, empty or white space (IsNullOrWhiteSpace)

To check if a string is null or empty, use IsNullOrWhiteSpace.

 

Code to check if a variable of type String “str1” is null or empty

String.IsNullOrWhiteSpace(str1)

• First value in (): string to be checked

 

 

・Sample Process

 

・Execution result

 

 

Check if the string contains the specified string.

Check if the string contains the specified string (Contains).

Use Contains to check if the string contains the specified string.

 

Code to check if the String variable “str1” contains “ab”.

str1.contains("ab")

• First value in (): string to search

 

 

・Sample Process

 

・Execution result

 

・Other samples and execution results
Left side of // is code, right side of // is output result

str1 = "abc123"
str1.contains("a")　　　//True
str1.contains("b")　　　//True
str1.contains("ab")　　 //True
str1.contains("z")　　　//False
str1.contains("az")　　 //False
str1.contains("a1")　　　//False
str1.contains("c1")　　　//True
str1.contains("123")　　//True
str1.contains("1234")　 //False

 

 

Check if the string matches the specified string (Equals)

Use Equals to determine if the string matches the specified string.

 

Code to check if the variable “str1” of type String matches “abc123”.

str1.Equals("abc123")

• The first value in (): the specified string to search.

 

 

・Sample Process

 

・Execution result

 

・Other samples and execution results
Left side of // is code, right side of // is output result

str1 = "abc123"
str1.Equals("abc123")　　　　//True
str1.Equals("abc")　　　 　　//False
str1.Equals("12")　　　　　　//False
str1.Equals("abc12345")　    //False
str1.Equals("ABC123")　　　　//False
str1.Equals("ABC123", StringComparison.CurrentCultureIgnoreCase)　　　　//True

 

 

 

Check if the string matches the specified string forward (StartsWith).

Use StartsWith to determine if the string starts with the specified string.

 

Code to check if a variable of type String “str1” is a forward match for “ab”.

str1.StartsWith("ab")

• The first value in (): the specified string to search.

 

 

・Sample Process

 

・Execution result

 

・Other samples and execution results
Left side of // is code, right side of // is output result

str1 = "abc123"
str1.StartsWith("a")　　　　　　//True
str1.StartsWith("b")　　　　　　//False
str1.StartsWith("z")　　　　　 //False
str1.StartsWith("abc12")　　   //True
str1.StartsWith("ab123")　　   //True
str1.StartsWith("ab1234")　    //False
str1.StartsWith("ABC")　　　　 //False
str1.StartsWith("ABC",StringComparison.CurrentCultureIgnoreCase)　　　　//True

 

 

 

Check if the string matches the specified string backward (EndsWith)

Use EndsWith to determine if the string ends with the specified string.

 

Code to check if a variable of type String “str1” is backward matched with “23”.

str1.EndsWith("23")

• The first value in (): the specified string to search.

 

 

・Sample Process

 

・Execution result

 

 

・Other samples and execution results
Left side of // is code, right side of // is output result

str1 = "abc123"
str1.EndsWith("3")　　　　　　//True
str1.EndsWith("2")　　　　　　//False
str1.EndsWith("23")　　　　　//True
str1.EndsWith("ab")　　　　　//False
str1.EndsWith("abc123")　　  //True
str1.EndsWith("C123")　　　  //False
str1.EndsWith("C123", StringComparison.CurrentCultureIgnoreCase)　　//True

 

 

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