Я пытаюсь выполнить поиск, используя несколько критериев, заданных TextBoxes и DropDownList.
Проблема, с которой я сталкиваюсь, заключается в том, что мне требуется способ присоединения дополнительных команд AND LIKE, если указанные TextBoxes / DropDownList имеют значения вих, к сожалению, кнопка не ведет себя так, как я хочу, она не показывает данные в сетке.Даже с пустыми текстовыми полями эта кнопка не выполняет команду SELECT.
КОД:
protected void queryButton_Click(object sender, EventArgs e)
{
string Filter = "";
if (resIDSearch.Text != "") { Filter = Filter + "ID LIKE '%" + resIDSearch.Text + "%' AND "; }
if (DFirstName.Text != "") { Filter = Filter + "FirstName LIKE '%" + DFirstName.Text + "%' AND "; }
if (DLastName.Text != "") { Filter = Filter + "LastName LIKE '%" + DLastName.Text + "%' AND "; }
if (contactNumSearch.Text != "") { Filter = Filter + "ContactNumber LIKE '%" + contactNumSearch.Text + "%' AND "; }
if (lotNumSearch.Text != "") { Filter = Filter + "LotNumber LIKE '%" + lotNumSearch.Text + "%' AND "; }
if (streetSearch.Text != "") { Filter = Filter + "StreetName LIKE '%" + streetSearch.Text + "%' AND "; }
if (villiageSearch.Text != "") { Filter = Filter + "VilliageName LIKE '%" + villiageSearch.Text + "%' AND "; }
if (vTypeBox.SelectedIndex != 0) { Filter = Filter + "VehicleType LIKE '%" + vTypeBox.SelectedItem.Text + "%' AND "; }
if (statusBox.SelectedIndex != 0) { Filter = Filter + "StatusID LIKE '%" + statusBox.SelectedValue + "%' AND "; }
if (DriIDSearch.Text != "") { Filter = Filter + "UserID LIKE '%" + DriIDSearch.Text + "%' AND "; }
if (resDateSearch.Text != "") { Filter = Filter + "ReservationDate LIKE '%" + resDateSearch.Text + "%' AND "; }
if (destSearch.Text != "") { Filter = Filter + "Destination LIKE '%" + destSearch.Text + "%' AND "; }
if (pickUpSearch.Text != "") { Filter = Filter + "PickupLocation LIKE '%" + pickUpSearch.Text + "%' AND "; }
if (Filter.Length > 0)
{
string FinalFilter = Filter.Remove(Filter.Length - 4, 3);
resDataSource.FilterExpression = FinalFilter;
}
else {
reservationTable.DataBind();
}
}
.NET SCRIPT:
<asp:GridView OnRowDataBound="reservationTable_RowDataBound" DataSourceID="resDataSource" CssClass="table table-bordered dataTable text-center" Width="100%" ID="reservationTable" runat="server" AutoGenerateColumns="False">
<Columns>
<asp:BoundField DataField="ID" HeaderText="Reservation ID" />
<asp:BoundField DataField="UserID" HeaderText="Driver ID" />
<asp:BoundField DataField="FirstName" HeaderText="Driver First Name" />
<asp:BoundField DataField="LastName" HeaderText="Driver Last Name" />
<asp:BoundField DataField="StatusID" HeaderText="Status" />
<asp:BoundField DataField="ContactNumber" HeaderText="Customer Contact #" />
<asp:BoundField DataField="LotNumber" HeaderText="Lot Number" />
<asp:BoundField DataField="StreetName" HeaderText="Street Name" />
<asp:BoundField DataField="VilliageName" HeaderText="Villiage" />
<asp:BoundField DataField="Note" HeaderText="Additional Information" />
<asp:BoundField DataField="VehicleType" HeaderText="Vehicle Requested" />
<asp:BoundField DataField="ReservationDate" HeaderText="Reservation Date" />
<asp:BoundField DataField="Destination" HeaderText="Destination" />
<asp:BoundField DataField="PickupLocation" HeaderText="Pick up" />
</Columns>
</asp:GridView>
<asp:SqlDataSource ID="resDataSource"
runat="server"
ConnectionString="<%$ ConnectionStrings:SiteDatabase%>"
ProviderName="<%$ ConnectionStrings:SiteDatabase.providerName%>"
SelectCommand="SELECT * FROM Reservation"></asp:SqlDataSource>