hii,
I am using devexpress grid control.In my grid there are price tabs,in that i want the prices column to show in the format 0,00....ie if my price is 3000 then it should show 3.000,00...help me please...It is for winforms and the frontend is c#.
The DevExpress controls are rich and complex and there are a number of ways to do this.
The simplest is probably to set a column's display format as follows:
gridColumn.DisplayFormat.FormatString = "N2";
gridColumn.DisplayFormat.FormatType = DevExpress.Utils.FormatType.Custom;
FormatString can be any of the .NET standard or custom format strings (look in MSDN or google for "Standard numeric format strings", "Custom numeric format strings").
For a devexpress XtraGrid you can use DevExpress.Utils.FormatInfo:
DevExpress.Utils.FormatInfo fi = new DevExpress.Utils.FormatInfo();
fi.FormatType = DevExpress.Utils.FormatType.Numeric;
fi.FormatString = "n2";
myColumn.DisplayFormat.Assign(fi);
If you also want to include the currency sign:
decimal price = 49.99M;
string data = price.ToString("c");
Currency formatting depends on system settings, and sometimes it is better to specify precision explicitly:
double price;
string text=price.ToString("N2"); // N3 for 3 digits , etc
来源：https://stackoverflow.com/questions/4895790/how-to-show-prices-in-the-format-0-00ie-for-hundred-100-00