//EnableSortingAndPagingCallbacks to minimize postbacks?
private void SortGridView(string sortExpression, string direction)
{
GridBAL booksLogic = new GridBAL();
//DataView myDataView = new DataView(booksLogic.GetData());
DataView myDataView = new DataView();
if (ViewState["username"].ToString() == "")
{
if (Convert.ToByte(ViewState["filter"]) == 1)
{
myDataView = booksLogic.GetData(Convert.ToByte(ViewState["filter"])).AsDataView();
}
else
{
myDataView = booksLogic.GetData().AsDataView();
}
}
else
{
myDataView = booksLogic.GetDataByUsername(ViewState["username"].ToString()).AsDataView();
}
myDataView.Sort = sortExpression + direction;
BooksGrid.DataSource = myDataView;
BooksGrid.DataBind();
}
protected void TakenBooks_Click(object sender, EventArgs e)
{
ViewState["filter"] = 0;
if (Session["email"] != null)
{
ViewState["username"] = (string)(Session["email"]);
}
else
{
ViewState["username"] = "";
}
//ViewState["username"] = "******";
GridBAL booksLogic = new GridBAL();
if (ViewState["username"].ToString() != "")
{
BooksGrid.DataSource = booksLogic.GetDataByUsername(ViewState["username"].ToString());
BooksGrid.DataBind();
}
else
{
TestLabel.Text = "You are not logged in";
}
}