How to data represent in datagridview like a tree view in wpf application

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private ObservableCollection<treemodel> tempAddData()
{
ObservableCollection<treemodel> temp = new ObservableCollection<treemodel>();
//new treeModel { IsExpand=false, Name = "megh",Contact="122" ,Address="ktm" ,IsVisible="Visibile", ParentName="" },
//new treeModel { IsExpand=false , Name = "sita", Address="pk",Contact="123456" , IsVisible="Visibile" , ParentName="megh" },
//new treeModel { IsExpand=false, Name = "gita",Address="lon" ,Contact="988484", IsVisible="Collapsed" , ParentName="sita"},
//new treeModel { IsExpand=false, Name = "ranjit",Address="india",Contact="984" , IsVisible="Collapsed" , ParentName="sita"},
//new treeModel { IsExpand=false, Name = "teatime",Address="kkf" ,Contact="2144", IsVisible="Visible" , ParentName="megh"},
//new treeModel { IsExpand=false, Name = "execuew",Address="6644" ,Contact="1233" ,IsVisible="Visibile" , ParentName="teatime"},
//new treeModel { IsExpand=false, Name = "ee", Address="1233" ,Contact="122", IsVisible="Collapsed", ParentName="execuew"} //Working
using (SqlConnection cmain = new SqlConnection(GlobleClass.DataConnectionString))
using (SqlCommand cmd = cmain.CreateCommand())
{
cmain.Open();
cmd.CommandText = @"SELECT * FROM MENUITEM WHERE LEVELS =1 and parent='MI'";//Not working

using (SqlDataReader dr = cmd.ExecuteReader())
{
while (dr.Read())
{
temp.Add(new treeModel
{

DESCA = dr["DESCA"].ToString(),
Parent = dr["Parent"].ToString(),
MGROUP = dr["MGROUP"].ToString(),
MCAT = dr["MCAT"].ToString()

});
}

}

}

return temp;
}

Posted 7-Oct-15 20:20pm

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VR Karthikeyan · Accepted Answer · 2015-10-07T23:22:00

Use the following code,

C#

private ObservableCollection tempAddData()
{
    ObservableCollection temp = new ObservableCollection();
    DataTable objTable = new DataTable();

    SqlConnection objConnection = new SqlConnection("Connection String Here");
    objConnection.Open();
    SqlCommand objSqlCommand = new SqlCommand("Query Here", objConnection);
    SqlDataAdapter objSqlDataAdapter = new SqlDataAdapter(objSqlCommand);
    objSqlDataAdapter.Fill(objTable);
    objConnection.Close();

    foreach(DataRow objRow in objTable.Rows)
    {
        treeModel objtreeModel =  new treeModel();

        objtreeModel.DESCA = objRow["DESCA"].ToString();
        objtreeModel.Parent = objRow["Parent"].ToString();
        objtreeModel.MGROUP = objRow["MGROUP"].ToString();
        objtreeModel.MCAT = objRow["MCAT"].ToString();

        temp.Add(objtreeModel);
    }

    return temp;
}