How to use string.contains() for finding multiple words

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I want to find various words in a single string so for this i am using string.contains("") but it only find single word and i want to search multiple words:
Ex : A,B,C,D
so i want check that string contain these four value or not
Thanks

Posted 20-Jan-12 21:21pm

sharad_sharma82

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Sergey Alexandrovich Kryukov 21-Jan-12 4:15am

Call it harder... :-)

The question is very illogical. You failed to use Contains and asking how to use it, as if Contain would be the only possibility. I'm sure you have brain, but I not using it? For now, you get my 1 for being so lazy to fail to do minimal search by yourself and use simple logic.

Sorry,
--SA

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koolprasad2003 · Answer 1 · 2012-01-20T21:29:00

Solution 1

string.contains, Returns a value indicating whether the specified String object occurs within this string.
so you can not check multiple values using it.

You can, Collect all text (that you want to search) in string array and loop through it using .Contains

Posted 20-Jan-12 21:29pm

koolprasad2003

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sharad_sharma82 21-Jan-12 3:50am

I have datalist control where i call iframe for showing pdf file:
1. <%# Eval("fileupload4") != "" && Eval("fileupload4").ToString().Contains(".pdf")? "<iframe id='iframes' width='900px' height='300px' runat="server" src='iframe.aspx?filename=Eval('fileupload4').ToString()'></iframe>" :
here i am checking that file extension is pdf or not
2. <asp:Image Width="100" ID="Image1" Style="color: White; border-width: 0px;" Height="100px"
ImageUrl='<%# Bind("fileupload4", "~/QuizAttachment/{0}") %>' runat="server" />
in this i also want to check that the file extension is ".jpeg,gif,.bmp" so that i ll use same column for image control for showing image
Thanks

OriginalGriff · Answer 2 · 2012-01-20T21:32:00

Solution 2

String.Contains will only search for a single string: you will have to do multiple searches if you continue to use it.
You could use a Regex:

C#

public static Regex regex = new Regex("hello|hola|salut", RegexOptions.IgnoreCase 
    | RegexOptions.CultureInvariant
    | RegexOptions.IgnorePatternWhitespace
    | RegexOptions.Compiled
    );

// Capture all Matches in the InputText
MatchCollection ms = regex.Matches(InputText);

Posted 20-Jan-12 21:32pm

OriginalGriff

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sharad_sharma82 21-Jan-12 3:50am

I have datalist control where i call iframe for showing pdf file:
1. <%# Eval("fileupload4") != "" && Eval("fileupload4").ToString().Contains(".pdf")? "<iframe id='iframes' width='900px' height='300px' runat="server" src='iframe.aspx?filename=Eval('fileupload4').ToString()'></iframe>" :
here i am checking that file extension is pdf or not
2. <asp:Image Width="100" ID="Image1" Style="color: White; border-width: 0px;" Height="100px"
ImageUrl='<%# Bind("fileupload4", "~/QuizAttachment/{0}") %>' runat="server" />
in this i also want to check that the file extension is ".jpeg,gif,.bmp" so that i ll use same column for image control for showing image
Thanks

OriginalGriff 21-Jan-12 4:01am

And your problem is? Or are you expecting me to write all the code for you?

How to use string.contains() for finding multiple words

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How to use string.contains() for finding multiple words

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