I'm trying to set value for BooleanField on my custom NewForm. If I try to do it from codebehind, visually it doesn't change, but when the item will be saved this field will be empty (neither true nor false):


<SharePoint:BooleanField runat="server" FieldName="boolField" ControlMode="New" ID="MyCustomField"/>

ASPX.CS (invokes in OnLoad method):

if (!SPContext.Current.Web.CurrentUser.IsSiteAdmin) // For example
    MyCustomField.Value = true; // Visually no changes
    MyCustomField.UpdateFieldValueInItem(); // Still nothing

I even tried to set in .aspx (and got "Parser error message"):

<SharePoint:BooleanField runat="server" FieldName="boolField" ControlMode="New" ID="MyCustomField" Value="TRUE"/>

However, if I'll try to change Field of any other type (NumberField, for example), everything will be OK.

Where am I wrong, and how can I do it from codebehind (or at least in aspx)?

Thanks in advance! =)

1 Answer 1



You should set the control as follow:

MyCustomField.ItemFieldValue = "1";
MyCustomField.Field.DefaultValue = "1";

Where 1 is for true, and 0 is for false

  • Tried this. Unfortunately, I get InvalidCastException. Also, I have no "DefaulView" property...
    – Alex
    Apr 2, 2014 at 13:00
  • DefaultValue it is.. Apr 2, 2014 at 13:03
  • Sorry, I meant I have no DefaultValue property! (just a typo).
    – Alex
    Apr 2, 2014 at 13:21
  • Yeah! I should be using it like this: MyCustomField.ItemFieldValue = "1"; MyCustomField.Field.DefaultValue = "1";
    – Alex
    Apr 2, 2014 at 13:52
  • Does that work ? Apr 2, 2014 at 13:56

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