formatting - Add comma thousand separator to decimal (.net) -

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I have a decimal number, say 1234.500.

I have to display it 1,234.4

string. Format ("{0: 0,0}", 1234.500) removes decimal place, and other formatting

You have custom formatting like #, ## 0.00 

  string s = string.Format ("{0: #, ## 0.00}", xx Should use;   
  1,234.50  will create, when xx = 1234.5M =  double  will be forgotten about converting Actually will not help. / P>

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