Index and length must refer to a location within the string

I have some address like this

122/852 Mansrovar society,Jaipur, Rajastha,India

where i need to write a function which extract Mansrovar society I tried below code but giving me error 

 string BuildingAddress = txtAddress.Substring(0, txtAddress.IndexOf(','));
            BuildingAddress = BuildingAddress.Substring(BuildingAddress.IndexOf(' '), BuildingAddress.Length);
Jon Skeet
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quotationmark

The second argument of string.Substring(int, int) is the length of the substring you want - so

BuildingAddress = BuildingAddress.Substring(BuildingAddress.IndexOf(' '),
                                            BuildingAddress.Length);

would only be valid if IndexOf returned 0.

If you just want "from the first space onwards" you can use the overload with a single parameter:

BuildingAddress = BuildingAddress.Substring(BuildingAddress.IndexOf(' '));

Note that that will still fail if the string doesn't contain a space - and it will have a leading space if it works. You might want:

BuildingAddress = BuildingAddress.Substring(BuildingAddress.IndexOf(' ') + 1);

which will always be valid, and skip the leading space - although it will only skip one space.

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