MVC :: Field Required While Submitting Wabpage In MVC?
Dec 11, 2010
I found a very piculiar care in ASP.Net MVC webpage submission to server. The model object is bound to the action event. It was working fine. I added another interger field to my model object and added a control to the webpage(.aspx). When I submit the page without entering data in the new field, I found that my ModelState.IsValid in the Action Event, is false and there is error registered as the field value is required. I am surprised why it will be a mandatory field? when I have not set is as Mandatory ? Is there some thing wrong I am doing? I putting the samples below.
New Filed in ASPX:
[Code]....
Controller Object :
[
{
AcceptVerbs(HttpVerbs.Post)]public
ActionResult AddDriver(Driver driver)
}
On submit of the page when control comes to the AddDriver Action event , I found the ModelState.IsValid is false.
why it is happening as I have not put any require attribute in the Model object's field.
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Apr 1, 2011
I have a DetailsView on the page and I have made one of the fields a TemplateField. In the EditItemTemplate and InsertItemTemplate I have a DropdownList that is databound to a table in my Sql Server database. I wanted to add an initial value to the DropdownList
namely "- select -" .
I set the AppendDataBoundItems property to true and added the initial value as a ListItem.Markup of the DropdownList
<asp:DropDownList ID="DropDownList_HP" runat="server"
AppendDataBoundItems="True" DataSourceID="SqlDataSource_HP" [code]...
This works fine for new input. The problem is however that the database already has records that were entered through a Windows Application and many of these records has a null value in this field and exceptions are thrown when I tried to open these records
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http://msdn.microsoft.com/en-us/library/ms366709.aspx
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This now solved the problem of opening a record where the value is null in the database, BUT now the RequiredFieldValidator is not validating anymore to make sure that a databound item is selected for this field and not the initial value "- select -". So basically now it is not checking anymore to see if valid input has been entered for the DropDownList and it accepts "- select -" thus it acts as if the field is not a required field anymore.
In short what is required is that I want to make sure that the user enters a valid selection in the DropDownList, but it must also cater for old records that do not have this field entered yet so that those old records can be opened in the DetailsView .Opening Old records (with null in that field):When these old records are opened in the DetailsView the DropDownlist should show "- select -" when the value in the database is null.
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How do I attach the field validators up a level to the 1st ascx control?
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[Code]....
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[Code]....
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[Code]....
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[Code]....
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