private void FillChild(string index, TreeNode tn)//fill up child nodes and respective child nodes of them
{
DataTable dt = new DataTable();
dt = GetProductCategoryByParentId(index);
int i = 0;
while (i < dt.Rows.Count)
{
TreeNode tn1 = new TreeNode();
tn1.Text = dt.Rows[i]["Category_Name"].ToString();
tn1.Value = dt.Rows[i]["Category_Id"].ToString();
tn.ChildNodes.Add(tn1);
FillChild((dt.Rows[i]["Category_Id"].ToString()), tn1);
i++;
}
TreeViewCategory.DataBind();
}
//To apply tree view, delete options and BIN tab
private void BindTreeView()//fucntion to fill up TreeView according to parent child nodes
{
TreeViewCategory.Nodes.Clear();
DataTable dt = new DataTable();
string x = "Parent_Id=" + "' '" + "";
dt = ObjProductCateMaster.GetProductCategoryTrueAllData(StrCompId);
dt = new DataView(dt, x, "", DataViewRowState.OriginalRows).ToTable();
int i = 0;
while (i < dt.Rows.Count)
{
TreeNode tn = new TreeNode();
tn.Text = dt.Rows[i]["Category_Name"].ToString();
tn.Value = dt.Rows[i]["Category_Id"].ToString();
TreeViewCategory.Nodes.Add(tn);
FillChild((dt.Rows[i]["Category_Id"].ToString()), tn);
i++;
}
TreeViewCategory.DataBind();
}