Bad format using DataFormatString="{0:#,##0}" in C1GridView 2025v2 399

Bad format using DataFormatString="{0:#,##0}" in C1GridView 2025v2 399

Posted by: enrique.pv-ext on 17 April 2026, 6:30 am EST

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  enrique.pv-ext

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  Posted 17 April 2026, 6:30 am EST

  Hi,

  Migrate from 2010v1 to 2025v2 399 in ASP.NET WebForms NET Framework 4.8.1.

  Using C1GridView from C1.Web.Wijmo.Controls.48.dll

  DataFormatString="{0:#,##0}"

  My markup code:

  
   <Columns>
       <cc1:C1BoundField DataField="MonthNumber" SortExpression="MonthNumber">
           <ItemStyle CssClass="GridText" />
       </cc1:C1BoundField>
       <cc1:C1BoundField DataFormatString="{0:#,##0}" HeaderText="I" DataField="I" SortExpression="I" >
       <ItemStyle CssClass="GridNumber" Width="80px" />
       </cc1:C1BoundField>

  Any suggestions ?

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  uttkarsh.matiyal

  

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  Posted 20 April 2026, 3:06 am EST

  Hello Enrique,
  
  In newer versions, the wijmo based grid uses client-side (JavaScript) using Globalize, not server-side .NET string.Format.
  
  Instead of using “{0:#,##0}” format, please use “n0”.
  
  We have created a sample with correct implementation: GridView_Sample.zip
  
  Regards,
  
  Uttkarsh.

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  enrique.pv-ext

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  Posted 20 April 2026, 3:48 am EST

  Working too using

  DataFormatString="c2"

  ?

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  uttkarsh.matiyal

  

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  Posted 20 April 2026, 7:36 am EST

  Hello Enrique,

  The “n0” is Number format (no decimals) whereas “c2” is Currency format (2 decimals). [numbers in format strings such as ‘0’ and ‘2’ represents numbers after decimal]

  If your column represents currency, you can use “c2”; however, if the column represents numbers, please use “n0”.

  Regards,
  
  Uttkarsh.

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  enrique.pv-ext

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  Posted 24 April 2026, 6:04 am EST

  alternatives for

  DataFormatString="{0:###,0}" 

  n0 ?

  DataFormatString="{0:#,##0}"

  c2 ?

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  uttkarsh.matiyal

  

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  Posted 24 April 2026, 8:56 am EST

  Hello Enrique,

  Both .NET format strings “{0:#,##0}” (number with thousand separators, no decimals) and “{0:###,0}” (grouped number, no decimals with a looser pattern) should be replaced with “n0”.
  
  This is the appropriate equivalent in the newer JavaScript-based Wijmo implementation used by C1 WebForms controls.

  Regards,
  
  Uttkarsh.