Updating a XmlDataSource at runtime

Question

I have this DropDownList bound to a XmlDataSource, but the XPath must depend on another input (another DropDownList). I modify the XPath and rebind inside the parent DDL's SelectedIndexChanged, but the page does not refresh. What should I do to display the update?

protected void ProductDropDownList_SelectedIndexChanged(object sender, EventArgs e)
{
    CompMapping.XPath = "//couple[@product='" + ProductDropDownList.SelectedValue + "']";
    CompMapping.DataBind();
    ComponentDropDown.DataBind();
}

ComponentDropDown is set to AutoPostBack=True, but that's not enough. Any idea? Could it be related to the fact both DropDownLists are in a UserControl?

score 0 · Answer 1 · answered Jul 07 '10 at 15:42

0

Remove the line:

CompMapping.DataBind();

answered Jul 07 '10 at 15:42

onof

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That doesn't change anything. – Antoine Jul 07 '10 at 15:45
Is it the user control loaded at run time with LoadControl()? – onof Jul 07 '10 at 17:30
No, it's added in the aspx in design mode. – Antoine Jul 08 '10 at 07:51

score 0 · Accepted Answer · edited Mar 14 '11 at 19:54

0

The issue must be linked to the fact that it's a user control, since linking the dropdowns outside it has no problem. Realizing I don't absolutely need these to be in a user control, I just moved them outside. That don't really solves the issue, but at least it's not my concern anymore.

edited Mar 14 '11 at 19:54

Jeff Atwood

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answered Jul 12 '10 at 13:44

Antoine

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Updating a XmlDataSource at runtime

2 Answers2