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using System;
using System.Collections.Generic;
using System.Xml.XPath;
using System.Xml;
using System.Xml.Linq;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.IO;    
using System.Text;  
using System.Windows.Forms;
using System.Data.SqlClient;

private DataGrid exp_datagrid = new DataGrid(); // ->DataGrid statt datagridview

private void Erzeuge_datagrid()
{
     exp_datagrid.DataMember = "";
     exp_datagrid.Location = new Point(0,0);
     exp_datagrid.Size = new Size(741, 417);
     p_Guide.Controls.Add(this.exp_datagrid);
}

private void Form1_Load(object sender, EventArgs e)
{
    Erzeuge_datagrid();
}

private void treeView3_NodeMouseClick(object sender, TreeNodeMouseClickEventArgs e)
{
    string exp_xml_pfad = "C:/deine_xmldatei.xml";
    switch (e.Node.SelectedImageIndex)
    {
        case 113:
            DataSet ds = new System.Data.DataSet();
            ds.ReadXml(exp_xml_pfad, XmlReadMode.InferSchema);
            exp_datagrid.SetDataBinding(ds, "exp_isro");
            break;
    }

}