C# string formatting with variable space alignment

Question

I want to do something like

String.Format("Completed {0:9} of ",0) + xlsx.totalCount.ToString();

except instead of hardcoding a 9 I want the alignment to be whatever xlsx.totalCount is. Any thoughts?

I'm thinking either string.PadLeft or new string(c, count)... — Marc Gravell
– Marc Gravell, Commented Jun 17, 2011 at 20:21

bradenb · Accepted Answer · 2011-06-17 20:23:25Z

4

Try it like this:

string formatString = "{0:" + xlsx.totalCount.ToString() + "}";
String.Format("Completed " + formatString + " of ", 0) + xlsx.totalCount.ToString();

answered Jun 17, 2011 at 20:23

bradenb

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Neowizard · Accepted Answer · 2011-06-17 20:44:58Z

3

The string doesn't have to be a compile time constant, you can build the string during runtime (using a StringBuilder, operator+ or even a nested String.Format). This, for instance will produce the needed string with xlsx.totalCount replacing the "9":

String.Format("Completed {0:" + xlsx.totalCount + "} of "...

edited Jun 17, 2011 at 20:44

answered Jun 17, 2011 at 20:22

Neowizard

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Comments

Herb · Accepted Answer · 2011-06-17 20:57:22Z

0

I'd assumed that he wanted a count of 9s depending on the value of xlsx.totalCount.

   StringBuilder sb = new StringBuilder();
   sb.Append( '9', xlsx.totalCount );
   String.Format( "Completed {0:" + sb.ToString() + "} of ",0) + xlsx.totalCount.ToString();

Again, there feels like there should be an easier way of building a chain of 9s, but not in 3 minutes of thinking, apparently.

answered Jun 17, 2011 at 20:57

Herb

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