Pass data to dynamic labels from a WebUserControl

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C#

ASP.NET

Gridview

user-controls

I have WebUserControl which includes a GridView. The GridView has a Select Command Field.
When a select button is pressed, I want the value of the 1st cell of the selected row to be displayed on a label in the .aspx page.
And this label might be changed time to time so there should be a way to inform the WebUserControl the name of the label where the data have to be displayed.

I tried to do this so many ways.
I tried to pass the Name of the Label to the web user control through a method. But when I click on a select button in the command field, the name of the Label I passed as a String parameter gets deleted.

Please help.
Thanks in advance! have a nice day!