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i tried that code snippet, it woked fine when i tried to run on a new form, but when i added the same code to a form that already has datagrid view, ot throwed an error &quot;The service System.Windows.Forms.Desig<wbr />n.ISelecti<wbr />onUIServic<wbr />e already exists in the service container. Parameter name &quot;&nbsp; 
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i tried that code snippet, it woked fine when i tried to run on a new form, but when i added the same code to a form that already has datagrid view, ot throwed an error "The service System.Windows.Forms.Design.ISelectionUIService already exists in the service container. Parameter name " 

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Which part of the code have you pasted on this existing form?
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Which part of the code have you pasted on this existing form?

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i pasted the whole code...the visual studio designer ois causing a problem, because there might be a datagrid view which is added dynamically to the form...and as i already have a datagrid view on the form..it might be throwing the error...<br />
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when i tried to run the samne code on a new form, it is working perfectly!
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i pasted the whole code...the visual studio designer ois causing a problem, because there might be a datagrid view which is added dynamically to the form...and as i already have a datagrid view on the form..it might be throwing the error...

when i tried to run the samne code on a new form, it is working perfectly!

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What is the name of this form and datagridview control that is already on the form?
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What is the name of this form and datagridview control that is already on the form?

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I wanted to place a datetimepicker in the 4th column of my datagridview..How can i do this..I tried some sample code from msdn...everything woked fine when i tried to run it.....but when i added the same code to my application, which already has a datagrid view...the visual studio designer generated an error.. <br />
&quot;The service System.Windows.Forms.Desig<wbr />n.ISelecti<wbr />onUIServic<wbr />e already exists in the service container. Parameter name&quot;
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I wanted to place a datetimepicker in the 4th column of my datagridview..How can i do this..I tried some sample code from msdn...everything woked fine when i tried to run it.....but when i added the same code to my application, which already has a datagrid view...the visual studio designer generated an error.. 
"The service System.Windows.Forms.Design.ISelectionUIService already exists in the service container. Parameter name"

host datetime picker in a datagridview

Visual Basic .NET (VB.NET) is an object-oriented programming language implemented on the .NET framework, but also supported on other platforms such as Mono and Silverlight. Microsoft launched VB.NET as the successor to the Visual Basic language. Though it is similar in syntax to  Visual Basic pre-2002, it is not the same technology,