Can I use 2 characters in indexof and index in C#?

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Indexof(', ', int32, int32, stringcomparison)

I have a customized textbox that autosuggests and shows listbox. I want it to suggest every after a comma with space ', ' not just a space or a comma. Thanks in advance. I'm new to c# btw. Im using winforms.

What I have tried:

None yet. I'm still reasearching for materials and knowledge for this.

Posted 28-May-18 3:50am

Aurelio Nogar

Updated 28-May-18 4:11am

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2 solutions

Solution 1

Yes: String.IndexOf Method (String) (System)[^]

C#

int index = myString.IndexOf(", ");

Posted 28-May-18 4:03am

OriginalGriff

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Aurelio Nogar 29-May-18 8:56am

A follow up question this is. How about spliting a string by 2 char?

var result = str.Split(new char[] {', '});

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Jochen Arndt · Accepted Answer · 2018-05-28T04:13:00

See the list of the String.IndexOf Method (System)[^] overloads. The official documentation is always the first to be read when being unsure. It contains also often a list of related functions that might do what you want when the initial one does not.

If you want to search for ", ", use one of the IndexOf methods accepting a string:

Quote:
Reports the zero-based index of the first occurrence of the specified string in the current String object.

Note also that it is not necessary to use an overload accepting a comparisonType for a search string containing only ASCII characters.

If you want to search for more complex cases (like a comma optionally followed by one or more spaces), have a look at regular expressions. But when a task can be done with a basic function like here, use that.