Error 'Compiler Error Message: CS1503: Argument 1: cannot convert from 'string' to 'char' ' in ASP.Net

hi

I have lable in page that it show number like:

100,000.00

I want it show like:100,000

so I change code like below:

dr["PriceT"] = (row.FindControl("LblPriceT") as Label).Text.Trim("NO");

but make this error:

Compilation Error

Description: An error occurred during the compilation of a resource required to service this request. Please review the following specific error details and modify your source code appropriately. Compiler Error Message: CS1503: Argument 1: cannot convert from 'string' to 'char'

what should I do?

Best Regards

Neda