Selecting the DropDownList Item Through ViewData

I am putting the current pageSize (5,10,15,20,All) in the ViewData inside the Controller. Now, I am trying to set the DropDownlist to set the selected value to the ViewData value.

  @Html.Dro开发者_StackOverflowpDownListFor(x => x.GridItems, new SelectList(Model.GridITems, "Value", "Text",ViewData["SelectedItemItemValue"].ToString()))

The above does not work and the first item is automatically selected when the page calls the action.

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The first argument to DropDownListFor should be the item in the Model that you want the selected value to be bound to. For example, if you had a property on your model called 'SelectedItemValue' then your code should be as follows

 @Html.DropDownListFor(x => x.SelectedItemValue, new SelectList(Model.GridITems, "Value", "Text",ViewData["SelectedItemItemValue"].ToString()))

(the last argument in the select list constructor is for the selected value so this assumes that you have something with a key of SelectedItemItemValue in your ViewData