Explain String.Format 1

[kav123]

Can someone explain what String.Format does. Basically i am amending someone's code and they have used String.Format to append parameters to the url. I need to basically add another parameter to that url.

here is the code, hope someone helps me with this one:

emailLink.NavigationUrl = ResolveUrl(string.Format("~/QuoteMonitor/QuoteMonitor.aspx?{0}={1}", QueryStringItemNames.QuoteMonitorStatusName, string.Format("byEmail${0}", quote.EmailAddress)));

byEmail is the querystring name and q'quote.EmailAddress' is the value. So currently it passes email and the email address. I need to add another name/value pair to this url with this parameter already there.

 

[jmeckley]

string.format does what is says. the {#} is a place holder for the respective parameter after the string. depending on the type of value you can format the parameter within {}
the string above would be easier to read like this

string key = QueryStringItemNames.QuoteMonitorStatusName;
string link = string.Format("~/QuoteMonitor/QuoteMonitor.aspx?{0}=byEmail${1}", key, quote.EmailAddress);
emailLink.NavigationUrl = ResolveUrl(link);

Jason Meckley
Programmer
Specialty Bakers, Inc.

 

[kav123]

Ok, got that but how do i add another parameter to this url, i.e. another key/value pair.

 

[jmeckley]

example:
string.format("{0}{1}{2}{3}", 1,"foo",DateTime.Now,new object());

the signature is string.format(string template, params string[] args);
params is the key here as you can add a variable amount of arguments.

Jason Meckley
Programmer
Specialty Bakers, Inc.

 

[kav123]

Hey thanks so much for that, that was really helpful. You are a star,.