I would like to place the controls as listed below in WPF. Please given an example to do the same.

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Assuming that
ContentRootis placed directly in yourWindow, it’ll inherit it’sWidthandHeightfrom theWindow. Then it’ll assign 200px to the 0th column, and 100px each to the 2nd and 3rd columns. And any leftover space will be assigned to the 1st column.Of course, you can change 200, 100, and 100 to whatever you want.
If needed, add
MinWidth="<value>"(replace<value>with a number) in the 1stColumnDefnitionto specify a minimum width that column must have.