c＃按属性过滤xml文件并在datagridview中显示

Question

I have looked and can't find the answer, I'm sure I'm just not looking for the right keywords, lol.

I have an XML file that I display in a datagridview, this all works fine. I'm trying to implant where I can click a button and 'reload' the datagridview with only certain parts of the xml file.

I will describe better. Just bear with me, I'm not the best at explaining.

This is the layout of my xml file.

<?xml version="1.0"?>
<Movies>
  <Name Name="Saw" Type="Horror" Year="2004-10-29" Overview="Overview">Saw</Name>
  <Name Name="Saw II" Type="Horror" Year="2005-10-28" Overview="Overview">Saw II</Name>
  <Name Name="Speed" Type="Action" Year="1994-06-10" Overview="Overview">Speed</Name>
  <Name Name="Batman Begins" Type="Action" Year="2005-06-17" Overview="Overview">Batman Begins</Name>
</Movies>

When I display normally I have it in a grid view like so. I had to upload image elsewhere the site wouldn't let me put it here. enter link description here

Now what I'm trying to do is make is where when I click a button I can display only certain Movie Types. Say for example, click a button and only display movies that are "Action".

I have found information on this and got where I can select only the actions. I got them to pop up in messageboxs'

                XmlDocument xml = new XmlDocument();
            xml.Load("movie.xml");

            XmlNodeList xnList = xml.SelectNodes("/Movies/Name[@Type='Action']");
            foreach (XmlNode xn in xnList)
            {
                MessageBox.Show(xn.InnerText);
            }

This actually shows say from the image the 2 movies that are action. But I can't figure out how to reload the datagridview with only these entries, and prefer with all information as before.

If I didn't explain clearly please say so, as I said before I know I"m not the best at explaining things.

Answer 1

One way is to load the xml into a DataTable. Then you can use its in-memory filtering capability to filter the grid.

DataSet ds = new DataSet();
ds.ReadXml("Movies.xml");
this.dataGridView.DataSource = ds.Tables[0];

Then you can filter it like this

private void FilterByType(string type)
{
            var dataView = ((DataTable) this.dataGridView.DataSource).DefaultView;
            dataView.RowFilter = "(Type = '" + type + "')";
}

To filter by substring use this syntax

dataView.RowFilter = "(Type LIKE *'" + substring + "*')";