Re: How to set default value in dropdown box by code.

gombear — Mon, 08 Feb 2010 14:41:02 GMT

Oh, my.

I'm must having senior moment. Thank a lot.

Re: How to set default value in dropdown box by code.

Jimmy — Sat, 06 Feb 2010 04:38:35 GMT

You need to pass the NamespaceManager to SelectSingleNode(). You're already doing that correctly in this line:

XmlWriter writer = MainDataSource.CreateNavigator().SelectSingleNode("/my:myFields/my:SomeGroup", NamespaceManager).AppendChild();

How to set default value in dropdown box by code.

gombear — Fri, 05 Feb 2010 21:25:05 GMT

I'm getting error/exception from setting default value for dropdown list.

Here is what I'm doing.......

I have a dropdown box that is populated from repeating node values in the form.

//***This is to create values for the repeating node.

string myNameSpace = NamespaceManager.LookupNamespace("my");

try{

Action[] xxCodes = DAO.GetValues("some");for (int i = 0; i < xxCodes.Length; i++)

{

XmlWriter writer = MainDataSource.CreateNavigator().SelectSingleNode("/my:myFields/my:SomeGroup", NamespaceManager).AppendChild();

writer.WriteStartElement("SomeGroups", myNameSpace);

writer.WriteElementString("someValue", myNameSpace, xxCodes[i].Code);

writer.WriteElementString("someDisplayName", myNameSpace, xxCodes[i].Description);

writer.WriteEndElement();

writer.Close();

}

......

//Then I map the dropdown list box to this repeating node. dropdown list works fine

So far so good.

Now I want depend on the other value, I want to pre-select the value for this dropdown list. So this pre-selected value will display as default value, but users can still change it by clicking dropdown selection button.

//Here is a snippet of code to set default display.

XPathNavigator navigator = this.CreateNavigator();

navigator.SelectSingleNode("/my:myFields/my:dropdownlist").Setvalue("defaultValue");

//Then this line of code produce this exception

>System.Xml.XPath.XPathException: Namespace Manager or XsltContext needed. This query has a prefix, variable, or user-defined function.

How do I fix this? Or What is the proper code to set default value for dropdown list?

Thanks.

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Re: How to set default value in dropdown box by code.

Re: How to set default value in dropdown box by code.

How to set default value in dropdown box by code.