VB NET - If string contains value1 or value2

Question

I m wondering how I can check if a string contains either  value1  or  value2   I tried this   If strMyString Contains  Something   Then  End if   This works  but this doesn t   If strMyString Contains  Something   or   Something2   Then  End if   This gives me the error that conversion from string to Long can t be done  If I put the or   Something2   inside the parenthesis of the first one  it gives me the error that the string cannot be converted to Boolean   So how can I check if the string contains either  string1  or  string2  without having to write too much code

User · Answer

Here is the alternative solution to check whether a particular string contains some predefined string. It uses IndexOf Function:

'this is your string
Dim strMyString As String = "aaSomethingbb"

'if your string contains these strings
Dim TargetString1 As String = "Something"
Dim TargetString2 As String = "Something2"

If strMyString.IndexOf(TargetString1) <> -1 Or strMyString.IndexOf(TargetString2) <> -1 Then

End If

NOTE: This solution has been tested with Visual Studio 2010.

User · Answer

You need this  If strMyString Contains  Something   or strMyString Contains  Something2   Then      Code End if

User · Answer

I ve approached this in a different way   I ve created a function which simply returns true or false   Usage     If FieldContains  A B C  MyFieldVariable True False  then     Do Something  End If  Public Function FieldContains Searchfor As String  SearchField As String  AllowNulls As Boolean  As Boolean         If AllowNulls And Len SearchField    0 Then Return True          For Each strSearchFor As String In Searchfor Split                  If UCase SearchField    UCase strSearchFor  Then                 Return True             End If         Next          Return False      End Function

User · Answer

If strMyString Contains  Something   or strMyString Contains  Something2   Then  End if   The error indicates that the compiler thinks you want to do a bitwise OR on a Boolean and a string   Which of course won t work

User · Answer

If strMyString Tostring Contains  Something   or strMyString Tostring Contains  Something2   Then        End if

User · Answer

You have to do it like this   If strMyString Contains  Something   OrElse strMyString Contains  Something2   Then       Put Code Here  End if

User · Answer

You have   Something2   by itself - you need to test it so a boolean is returned   If strMyString Contains  Something   or strMyString Contains  Something2   Then

User · Answer

Interestingly  this solution can break  but a workaround  Looking for my database called KeyWorks accdb which must exist  Run this  Dim strDataPath As String   GetSetting  quot KeyWorks quot    quot dataPath quot    quot 01 quot    quot  quot    get from registry  If Not strDataPath Contains  quot KeyWorks accdb quot   Then    etc   If my database is named KeyWorksBB accdb  the If statement will find this acceptable and exit the If statement because it did indeed find KeyWorks and accdb  If I surround the If statement qualifier with single quotes like  KeyWorks accdb   it now looks for all the consecutive characters in order and would enter the If block because it did not match

User · Answer

In addition to the answers already given it will be quicker if you use OrElse instead of Or because the second test is short circuited  This is especially true if you know that one string is more likely than the other in which case place this first   If strMyString Contains  Most Likely To Find   OrElse strMyString Contains  Less Likely to Find   Then      Code End if

[vb.net] VB.NET - If string contains "value1" or "value2"

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