绑定字符串到下拉列表

Question

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<?xml version="1.0" encoding="UTF-8"?>
<mmsdata>
	<timestamp>Fri Jan 30 08:46:13 EST 2015</timestamp>
	<mill n="AG" name="Augusta, GA">
		<ds>
			<server>agppra</server>
			<server>agpprb</server>
		</ds>
		<mach n="1">
			<srn n="1" calctype="2CV">RL.CLP (1)</srn>

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任何人都可以在此代码中看到错误，使其无法绑定到dropdownlist1吗？我重用了用于将int绑定到dropdownlist2的代码，但是这个代码不会绑定任何东西。如果你看不到错误，可以在我应该看的地方寻求帮助吗？

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// Getting the XML file imported in
string filePath = @"C:\Projects\MEAS\Central\MillView\PVDA\Main\PVDA\PVDA.Web\MillData.xml";
// Set the file path
XDocument xDoc = XDocument.Load(filePath);


var dropDownDataList1 = GetMillInfo(xDoc, "AG");

// Bind your Mills to your DropDownList1
DropDownList1.DataSource = GetMillInfo(xDoc, "AG");
// Set your text / value properties
DropDownList1.DataTextField = "millName";
DropDownList1.DataValueField = "millInfo";
// Actually bind the contents to be reflected in the UI
DropDownList1.DataBind();

public List<Mill> GetMillInfo(XDocument xDoc, string millNameInfo)
{
	return xDoc.XPathSelectElements("./mmsdata/mill")
			  .Where(x => x.Attribute("n").Value == millNameInfo)
			  .Elements()
			  .Select(x => new Mill
			  {
				  millInfo = x.Value,
				  millName = x.Attribute("n").Value
			  }).ToList();
}

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