public static string Eval(object container, string xPath, string format, IXmlNamespaceResolver resolver)
{
object value = XPathBinder.Eval(container, xPath, resolver);
if (value == null)
{
return(String.Empty);
}
else
{
if (String.IsNullOrEmpty(format))
{
return(value.ToString());
}
else
{
return(String.Format(format, value));
}
}
}
protected internal IEnumerable XPathSelect(string xPathExpression, IXmlNamespaceResolver resolver)
{
this.CheckPageExists();
return(XPathBinder.Select(this.Page.GetDataItem(), xPathExpression, resolver));
}
protected internal IEnumerable XPathSelect(string xPathExpression)
{
this.CheckPageExists();
return(XPathBinder.Select(this.Page.GetDataItem(), xPathExpression));
}
protected internal string XPath(string xPathExpression, string format, IXmlNamespaceResolver resolver)
{
this.CheckPageExists();
return(XPathBinder.Eval(this.Page.GetDataItem(), xPathExpression, format, resolver));
}
protected internal string XPath(string xPathExpression, string format)
{
this.CheckPageExists();
return(XPathBinder.Eval(this.Page.GetDataItem(), xPathExpression, format));
}
protected internal object XPath(string xPathExpression)
{
this.CheckPageExists();
return(XPathBinder.Eval(this.Page.GetDataItem(), xPathExpression));
}
protected internal IEnumerable XPathSelect(string xpathexpression, IXmlNamespaceResolver resolver)
{
return(XPathBinder.Select(Page.GetDataItem(), xpathexpression, resolver));
}
protected internal IEnumerable XPathSelect(string xpathexpression)
{
return(XPathBinder.Select(Page.GetDataItem(), xpathexpression));
}
protected internal string XPath(string xpathexpression, string format, IXmlNamespaceResolver resolver)
{
return(XPathBinder.Eval(Page.GetDataItem(), xpathexpression, format, resolver));
}
protected internal string XPath(string xpathexpression, string format)
{
return(XPathBinder.Eval(Page.GetDataItem(), xpathexpression, format));
}
protected internal object XPath(string xpathexpression, IXmlNamespaceResolver resolver)
{
return(XPathBinder.Eval(Page.GetDataItem(), xpathexpression, null, resolver));
}
protected internal object XPath(string xpathexpression)
{
return(XPathBinder.Eval(Page.GetDataItem(), xpathexpression));
}
/// <devdoc>
/// Simplified databinding XPath() method. This method uses the current data item and a namespace resolver
/// to evaluate an XPath expression using XPathBinder.Eval().
/// The data item is retrieved using either the IDataItemContainer interface or by looking for a property called 'DataItem'.
/// If the data item is not found, an exception is thrown.
/// </devdoc>
protected internal object XPath(string xPathExpression, IXmlNamespaceResolver resolver)
{
CheckPageExists();
return(XPathBinder.Eval(Page.GetDataItem(), xPathExpression, resolver));
}