Dropdownlist get the selected value in mvc

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I have a bug which my dropdownlist auto reset value to default! Can u help me! Thanks!

In model, i define: public List StatesId { get; set; }

In view:

A: @Html.DropDownListFor(m => m.StatesId, new SelectList(Model.States.Where(p=>p.StateTypeId == s1), "StateId", "StateContent"), "Select")

B: @Html.DropDownListFor(m => m.StatesId, new SelectList(Model.States.Where(p => p.StateTypeId == s2), "StateId", "StateContent"), "Select")

C: @Html.DropDownListFor(m => m.StatesId, new SelectList(Model.States.Where(p => p.StateTypeId == s3), "StateId", "StateContent"), "Select")

After click submit thì the selected value in A is shown, but the value in B, C box, it will be auto reseted to default which is "select", now, i want to after summit, the value in B and C box will show the value which i have choosen! Thanks

asked 56 secs ago

Diện Thạch

1

Dropdownlist get the selected value in mvc