SetViewXml in XsltListViewWebPart not working

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SharePoint

I am trying to show the list in datasheet view and be able to update the Type attribute value of View node with xpath. However, when I try to update the view using setviewxml it is not getting updated.

Any help is greatly appreciated.

XsltListViewWebPart myWebPart = (XsltListViewWebPart)oWebpart;

SPView doclibview = view;
Guid oGuid = new Guid(myWebPart.ViewGuid);


SPView oWebPartView = list.Views[oGuid];


oWebPartView.ViewFields.DeleteAll();

foreach (string strField in doclibview.ViewFields)
{
    oWebPartView.ViewFields.Add(strField);
}
string strloadxml = oWebPartView.GetViewXml();

XmlDocument doc = new XmlDocument();
doc.LoadXml(strloadxml);

XmlNode node = doc.SelectSingleNode("/View");
node.Attributes["Type"].Value = "Grid";

string resxml = doc.InnerXml.ToString();
oWebPartView.SetViewXml(resxml);

oWebPartView.Update();