InfoPath Dev

Hi there.

I want to set a date picker to a date. I read I have to remove the nil attribute in order to do that. This works great, *but* the date picker is then set to can not be blank.
How can I readd the attribute in case the user wants to remove the date?

Thanks!

Hi Delu,
Check out the jscript code in the samples that ship with InfoPath. They have the same issue and solve it in code.

Patrick Halstead [InfoPath MVP]
InfoPath Dev Seattle

This might be helpful:

/*------------------------------------------------------------------------------
	setNil() - Empty a nillable element.
------------------------------------------------------------------------------*/
function setNil(xpath)
{
	var xmlNode = getNode(xpath);

	if (!xmlNode || xmlNode.text === "")
		return;

	// Create xsi:nil attribute with the proper namespace.
	var xmlNil = xmlNode.ownerDocument.createNode(2, "xsi:nil", "http://www.w3.org/2001/XMLSchema-instance");
	xmlNil.text = "true";

	// The order is important.
	xmlNode.text = "";
	xmlNode.setAttributeNode(xmlNil);
}

---------------
Matt Faus
InfoPath Dev Texas

Hi,
The posted code above was a great help. I transformed it into C# in a VS2003 project and thought it might be helpful:
Thanks!

// CUSTOM Method: SetNil
// Needed because of the xml and form validation rules on certain fields like DateTime, Boolean, etc.
public void SetNil(IXMLDOMNode node)
{
if( node.text == "")
{ return; }
IXMLDOMElement nilElement;
IXMLDOMAttribute nilAttribute;

// Create an element and an attribute for xsi:nil with the proper namespace.
nilElement = (IXMLDOMElement)node;
nilAttribute = (IXMLDOMAttribute)node.ownerDocument.createNode((int)DOMNodeType.NODE_ATTRIBUTE,"xsi:nil",xsiNS);
nilAttribute.text = "true";

// The order is important
node.text = String.Empty;
nilElement.setAttributeNode(nilAttribute);
}