Gridview display all records on load?

Hello, can someone help me to understand how to make a gridview display all records from a SQLDataSource onload, and also dynamically display filtered records using dropdowns?

TIA,
SS
<%@ Page Title="Plant ssDNA Virus Database" Language="VB" MasterPageFile="~/Site.Master" AutoEventWireup="false"
    CodeFile="Default.aspx.vb" Inherits="_Default" %>

<asp:Content ID="HeaderContent" runat="server" ContentPlaceHolderID="HeadContent">
</asp:Content>
<asp:Content ID="BodyContent" runat="server" ContentPlaceHolderID="MainContent">

    <asp:SqlDataSource ID="SqlDataSource1" runat="server" 
    ConnectionString="<%$ ConnectionStrings:PlantssDNAVirusesConnectionString %>" 
    SelectCommand="SELECT * FROM [PlantssDNA] WHERE ([Family] = @Family) ORDER BY [Family], [Species], [Abbreviation]" 
        OldValuesParameterFormatString="original_{0}" 
        ConflictDetection="CompareAllValues" 
        DeleteCommand="DELETE FROM [PlantssDNA] WHERE [VID] = @original_VID AND (([Family] = @original_Family) OR ([Family] IS NULL AND @original_Family IS NULL)) AND (([SubFamily] = @original_SubFamily) OR ([SubFamily] IS NULL AND @original_SubFamily IS NULL)) AND (([Genus] = @original_Genus) OR ([Genus] IS NULL AND @original_Genus IS NULL)) AND (([SubGenus] = @original_SubGenus) OR ([SubGenus] IS NULL AND @original_SubGenus IS NULL)) AND (([Species] = @original_Species) OR ([Species] IS NULL AND @original_Species IS NULL)) AND (([Isolate] = @original_Isolate) OR ([Isolate] IS NULL AND @original_Isolate IS NULL)) AND (([Abbreviation] = @original_Abbreviation) OR ([Abbreviation] IS NULL AND @original_Abbreviation IS NULL)) AND (([AccessionA] = @original_AccessionA) OR ([AccessionA] IS NULL AND @original_AccessionA IS NULL)) AND (([GIA] = @original_GIA) OR ([GIA] IS NULL AND @original_GIA IS NULL)) AND (([AccessionB] = @original_AccessionB) OR ([AccessionB] IS NULL AND @original_AccessionB IS NULL)) AND (([GIB] = @original_GIB) OR ([GIB] IS NULL AND @original_GIB IS NULL)) AND (([NC#] = @original_column1) OR ([NC#] IS NULL AND @original_column1 IS NULL)) AND (([Geography] = @original_Geography) OR ([Geography] IS NULL AND @original_Geography IS NULL)) AND (([Year2007A] = @original_Year2007A) OR ([Year2007A] IS NULL AND @original_Year2007A IS NULL)) AND (([Year2007B] = @original_Year2007B) OR ([Year2007B] IS NULL AND @original_Year2007B IS NULL)) AND (([Year2008A] = @original_Year2008A) OR ([Year2008A] IS NULL AND @original_Year2008A IS NULL)) AND (([Year2008B] = @original_Year2008B) OR ([Year2008B] IS NULL AND @original_Year2008B IS NULL)) AND (([Year2009A] = @original_Year2009A) OR ([Year2009A] IS NULL AND @original_Year2009A IS NULL)) AND (([Year2009B] = @original_Year2009B) OR ([Year2009B] IS NULL AND @original_Year2009B IS NULL)) AND (([Year2010A] = @original_Year2010A) OR ([Year2010A] IS NULL AND @original_Year2010A IS NULL)) AND (([Year2010B] = @original_Year2010B) OR ([Year2010B] IS NULL AND @original_Year2010B IS NULL)) AND (([Year2011A] = @original_Year2011A) OR ([Year2011A] IS NULL AND @original_Year2011A IS NULL)) AND (([Year2011B] = @original_Year2011B) OR ([Year2011B] IS NULL AND @original_Year2011B IS NULL))" 
        InsertCommand="INSERT INTO [PlantssDNA] ([Family], [SubFamily], [Genus], [SubGenus], [Species], [Isolate], [Abbreviation], [AccessionA], [GIA], [AccessionB], [GIB], [NC#], [Geography], [Year2007A], [Year2007B], [Year2008A], [Year2008B], [Year2009A], [Year2009B], [Year2010A], [Year2010B], [Year2011A], [Year2011B]) VALUES (@Family, @SubFamily, @Genus, @SubGenus, @Species, @Isolate, @Abbreviation, @AccessionA, @GIA, @AccessionB, @GIB, @column1, @Geography, @Year2007A, @Year2007B, @Year2008A, @Year2008B, @Year2009A, @Year2009B, @Year2010A, @Year2010B, @Year2011A, @Year2011B)" 
        UpdateCommand="UPDATE [PlantssDNA] SET [Family] = @Family, [SubFamily] = @SubFamily, [Genus] = @Genus, [SubGenus] = @SubGenus, [Species] = @Species, [Isolate] = @Isolate, [Abbreviation] = @Abbreviation, [AccessionA] = @AccessionA, [GIA] = @GIA, [AccessionB] = @AccessionB, [GIB] = @GIB, [NC#] = @column1, [Geography] = @Geography, [Year2007A] = @Year2007A, [Year2007B] = @Year2007B, [Year2008A] = @Year2008A, [Year2008B] = @Year2008B, [Year2009A] = @Year2009A, [Year2009B] = @Year2009B, [Year2010A] = @Year2010A, [Year2010B] = @Year2010B, [Year2011A] = @Year2011A, [Year2011B] = @Year2011B WHERE [VID] = @original_VID AND (([Family] = @original_Family) OR ([Family] IS NULL AND @original_Family IS NULL)) AND (([SubFamily] = @original_SubFamily) OR ([SubFamily] IS NULL AND @original_SubFamily IS NULL)) AND (([Genus] = @original_Genus) OR ([Genus] IS NULL AND @original_Genus IS NULL)) AND (([SubGenus] = @original_SubGenus) OR ([SubGenus] IS NULL AND @original_SubGenus IS NULL)) AND (([Species] = @original_Species) OR ([Species] IS NULL AND @original_Species IS NULL)) AND (([Isolate] = @original_Isolate) OR ([Isolate] IS NULL AND @original_Isolate IS NULL)) AND (([Abbreviation] = @original_Abbreviation) OR ([Abbreviation] IS NULL AND @original_Abbreviation IS NULL)) AND (([AccessionA] = @original_AccessionA) OR ([AccessionA] IS NULL AND @original_AccessionA IS NULL)) AND (([GIA] = @original_GIA) OR ([GIA] IS NULL AND @original_GIA IS NULL)) AND (([AccessionB] = @original_AccessionB) OR ([AccessionB] IS NULL AND @original_AccessionB IS NULL)) AND (([GIB] = @original_GIB) OR ([GIB] IS NULL AND @original_GIB IS NULL)) AND (([NC#] = @original_column1) OR ([NC#] IS NULL AND @original_column1 IS NULL)) AND (([Geography] = @original_Geography) OR ([Geography] IS NULL AND @original_Geography IS NULL)) AND (([Year2007A] = @original_Year2007A) OR ([Year2007A] IS NULL AND @original_Year2007A IS NULL)) AND (([Year2007B] = @original_Year2007B) OR ([Year2007B] IS NULL AND @original_Year2007B IS NULL)) AND (([Year2008A] = @original_Year2008A) OR ([Year2008A] IS NULL AND @original_Year2008A IS NULL)) AND (([Year2008B] = @original_Year2008B) OR ([Year2008B] IS NULL AND @original_Year2008B IS NULL)) AND (([Year2009A] = @original_Year2009A) OR ([Year2009A] IS NULL AND @original_Year2009A IS NULL)) AND (([Year2009B] = @original_Year2009B) OR ([Year2009B] IS NULL AND @original_Year2009B IS NULL)) AND (([Year2010A] = @original_Year2010A) OR ([Year2010A] IS NULL AND @original_Year2010A IS NULL)) AND (([Year2010B] = @original_Year2010B) OR ([Year2010B] IS NULL AND @original_Year2010B IS NULL)) AND (([Year2011A] = @original_Year2011A) OR ([Year2011A] IS NULL AND @original_Year2011A IS NULL)) AND (([Year2011B] = @original_Year2011B) OR ([Year2011B] IS NULL AND @original_Year2011B IS NULL))">
        <DeleteParameters>
            <asp:Parameter Name="original_VID" Type="Int32" />
            <asp:Parameter Name="original_Family" Type="String" />
            <asp:Parameter Name="original_SubFamily" Type="String" />
            <asp:Parameter Name="original_Genus" Type="String" />
            <asp:Parameter Name="original_SubGenus" Type="String" />
            <asp:Parameter Name="original_Species" Type="String" />
            <asp:Parameter Name="original_Isolate" Type="String" />
            <asp:Parameter Name="original_Abbreviation" Type="String" />
            <asp:Parameter Name="original_AccessionA" Type="String" />
            <asp:Parameter Name="original_GIA" Type="String" />
            <asp:Parameter Name="original_AccessionB" Type="String" />
            <asp:Parameter Name="original_GIB" Type="String" />
            <asp:Parameter Name="original_column1" Type="String" />
            <asp:Parameter Name="original_Geography" Type="String" />
            <asp:Parameter Name="original_Year2007A" Type="String" />
            <asp:Parameter Name="original_Year2007B" Type="String" />
            <asp:Parameter Name="original_Year2008A" Type="String" />
            <asp:Parameter Name="original_Year2008B" Type="String" />
            <asp:Parameter Name="original_Year2009A" Type="String" />
            <asp:Parameter Name="original_Year2009B" Type="String" />
            <asp:Parameter Name="original_Year2010A" Type="String" />
            <asp:Parameter Name="original_Year2010B" Type="String" />
            <asp:Parameter Name="original_Year2011A" Type="String" />
            <asp:Parameter Name="original_Year2011B" Type="String" />
        </DeleteParameters>
        <InsertParameters>
            <asp:Parameter Name="Family" Type="String" />
            <asp:Parameter Name="SubFamily" Type="String" />
            <asp:Parameter Name="Genus" Type="String" />
            <asp:Parameter Name="SubGenus" Type="String" />
            <asp:Parameter Name="Species" Type="String" />
            <asp:Parameter Name="Isolate" Type="String" />
            <asp:Parameter Name="Abbreviation" Type="String" />
            <asp:Parameter Name="AccessionA" Type="String" />
            <asp:Parameter Name="GIA" Type="String" />
            <asp:Parameter Name="AccessionB" Type="String" />
            <asp:Parameter Name="GIB" Type="String" />
            <asp:Parameter Name="column1" Type="String" />
            <asp:Parameter Name="Geography" Type="String" />
            <asp:Parameter Name="Year2007A" Type="String" />
            <asp:Parameter Name="Year2007B" Type="String" />
            <asp:Parameter Name="Year2008A" Type="String" />
            <asp:Parameter Name="Year2008B" Type="String" />
            <asp:Parameter Name="Year2009A" Type="String" />
            <asp:Parameter Name="Year2009B" Type="String" />
            <asp:Parameter Name="Year2010A" Type="String" />
            <asp:Parameter Name="Year2010B" Type="String" />
            <asp:Parameter Name="Year2011A" Type="String" />
            <asp:Parameter Name="Year2011B" Type="String" />
        </InsertParameters>
        <SelectParameters>
            <asp:ControlParameter ControlID="ddlFamily" Name="Family" 
                PropertyName="SelectedValue" Type="String" />
        </SelectParameters>
        <UpdateParameters>
            <asp:Parameter Name="Family" Type="String" />
            <asp:Parameter Name="SubFamily" Type="String" />
            <asp:Parameter Name="Genus" Type="String" />
            <asp:Parameter Name="SubGenus" Type="String" />
            <asp:Parameter Name="Species" Type="String" />
            <asp:Parameter Name="Isolate" Type="String" />
            <asp:Parameter Name="Abbreviation" Type="String" />
            <asp:Parameter Name="AccessionA" Type="String" />
            <asp:Parameter Name="GIA" Type="String" />
            <asp:Parameter Name="AccessionB" Type="String" />
            <asp:Parameter Name="GIB" Type="String" />
            <asp:Parameter Name="column1" Type="String" />
            <asp:Parameter Name="Geography" Type="String" />
            <asp:Parameter Name="Year2007A" Type="String" />
            <asp:Parameter Name="Year2007B" Type="String" />
            <asp:Parameter Name="Year2008A" Type="String" />
            <asp:Parameter Name="Year2008B" Type="String" />
            <asp:Parameter Name="Year2009A" Type="String" />
            <asp:Parameter Name="Year2009B" Type="String" />
            <asp:Parameter Name="Year2010A" Type="String" />
            <asp:Parameter Name="Year2010B" Type="String" />
            <asp:Parameter Name="Year2011A" Type="String" />
            <asp:Parameter Name="Year2011B" Type="String" />
            <asp:Parameter Name="original_VID" Type="Int32" />
            <asp:Parameter Name="original_Family" Type="String" />
            <asp:Parameter Name="original_SubFamily" Type="String" />
            <asp:Parameter Name="original_Genus" Type="String" />
            <asp:Parameter Name="original_SubGenus" Type="String" />
            <asp:Parameter Name="original_Species" Type="String" />
            <asp:Parameter Name="original_Isolate" Type="String" />
            <asp:Parameter Name="original_Abbreviation" Type="String" />
            <asp:Parameter Name="original_AccessionA" Type="String" />
            <asp:Parameter Name="original_GIA" Type="String" />
            <asp:Parameter Name="original_AccessionB" Type="String" />
            <asp:Parameter Name="original_GIB" Type="String" />
            <asp:Parameter Name="original_column1" Type="String" />
            <asp:Parameter Name="original_Geography" Type="String" />
            <asp:Parameter Name="original_Year2007A" Type="String" />
            <asp:Parameter Name="original_Year2007B" Type="String" />
            <asp:Parameter Name="original_Year2008A" Type="String" />
            <asp:Parameter Name="original_Year2008B" Type="String" />
            <asp:Parameter Name="original_Year2009A" Type="String" />
            <asp:Parameter Name="original_Year2009B" Type="String" />
            <asp:Parameter Name="original_Year2010A" Type="String" />
            <asp:Parameter Name="original_Year2010B" Type="String" />
            <asp:Parameter Name="original_Year2011A" Type="String" />
            <asp:Parameter Name="original_Year2011B" Type="String" />
        </UpdateParameters>
    </asp:SqlDataSource>
     
    <asp:SqlDataSource ID="SqlDSFamily" runat="server" 
        ConnectionString="<%$ ConnectionStrings:PlantssDNAVirusesConnectionString %>" 
        SelectCommand="SELECT DISTINCT * FROM [Family] ORDER BY [Family]"></asp:SqlDataSource>
     
    <asp:SqlDataSource ID="SqlDSGenus" runat="server"
      ConnectionString="<%$ ConnectionStrings:PlantssDNAVirusesConnectionString %>" 
        SelectCommand="SELECT * FROM [Genus] ORDER BY [Genus]"></asp:SqlDataSource>

    Records to display:
    <asp:DropDownList ID="ddlRowsPerPage" runat="server" AutoPostBack="True">
        <asp:ListItem Value="25"></asp:ListItem>
        <asp:ListItem Value="50"></asp:ListItem>
        <asp:ListItem Value="100"></asp:ListItem>
        <asp:ListItem Value="5000">ALL</asp:ListItem>
    </asp:DropDownList>
    &nbsp;&nbsp;&nbsp;&nbsp; Family:&nbsp;
    <asp:DropDownList ID="ddlFamily" runat="server" AutoPostBack="True" 
        DataSourceID="SqlDSFamily" DataTextField="Family" DataValueField="Family">
    </asp:DropDownList>
    &nbsp;&nbsp;&nbsp;&nbsp; Genus: <asp:DropDownList ID="ddlGenus" 
        runat="server" AutoPostBack="True" DataSourceID="SqlDSGenus" 
        DataTextField="Genus" DataValueField="Genus">
    </asp:DropDownList>
    <br />
    <br />
     
<asp:GridView ID="GridView1" runat="server" AllowPaging="True" 
    AllowSorting="True" CellPadding="4" DataSourceID="SqlDataSource1" 
    ForeColor="#333333" GridLines="None" HorizontalAlign="Left" PageSize="20" 
    AutoGenerateColumns="False" CellSpacing="1" 
        DataKeyNames="VID" 
        AutoGenerateEditButton="True">
    <AlternatingRowStyle BackColor="White" BorderStyle="Solid" />
    <Columns>
        <asp:TemplateField ShowHeader="false">
            <ItemTemplate>
                <asp:LinkButton ID="LinkButton1" runat="server" CausesValidation="false" CommandName="Delete"
                     OnClientClick='return confirm("Are you sure you want to delete this entry?");'
                     Text="Delete" ForeColor="#CC0000" />
            </ItemTemplate>
        </asp:TemplateField>
        <asp:BoundField DataField="VID" HeaderText="VID" InsertVisible="False" 
            ReadOnly="True" SortExpression="VID" Visible="False" />
        <asp:BoundField DataField="Family" HeaderText="Family" 
            SortExpression="Family" >
        <ItemStyle Wrap="False" />
        </asp:BoundField>
        <asp:BoundField DataField="SubFamily" HeaderText="SubFamily" 
            SortExpression="SubFamily" >
        <ItemStyle Wrap="False" />
        </asp:BoundField>
        <asp:BoundField DataField="Genus" HeaderText="Genus" SortExpression="Genus" >
        <ItemStyle Wrap="False" />
        </asp:BoundField>
        <asp:BoundField DataField="SubGenus" HeaderText="SubGenus" 
            SortExpression="SubGenus" >
        <ItemStyle Wrap="False" />
        </asp:BoundField>
        <asp:BoundField DataField="Species" HeaderText="Species" 
            SortExpression="Species" >
        <ControlStyle Width="500px" />
        <ItemStyle Wrap="False" />
        </asp:BoundField>
        <asp:BoundField DataField="Isolate" HeaderText="Isolate" 
            SortExpression="Isolate" >
        <ControlStyle Width="500px" />
        <ItemStyle Wrap="False" />
        </asp:BoundField>
        <asp:BoundField DataField="Abbreviation" HeaderText="Abbreviation" 
            SortExpression="Abbreviation" >
        <ControlStyle Width="500px" />
        <ItemStyle Wrap="False" />
        </asp:BoundField>
        <asp:BoundField DataField="AccessionA" HeaderText="AccessionA" 
            SortExpression="AccessionA" >
        <ItemStyle Wrap="False" />
        </asp:BoundField>
        <asp:BoundField DataField="GIA" HeaderText="GIA" SortExpression="GIA" >
        <ItemStyle Wrap="False" />
        </asp:BoundField>
        <asp:BoundField DataField="AccessionB" HeaderText="AccessionB" 
            SortExpression="AccessionB" >
        <ItemStyle Wrap="False" />
        </asp:BoundField>
        <asp:BoundField DataField="GIB" HeaderText="GIB" SortExpression="GIB" >
        <ItemStyle Wrap="False" />
        </asp:BoundField>
        <asp:BoundField DataField="NC#" HeaderText="NC#" SortExpression="NC#" />
        <asp:BoundField DataField="Geography" HeaderText="Geography" 
            SortExpression="Geography" >
        <ItemStyle Wrap="False" />
        </asp:BoundField>
        <asp:BoundField DataField="Year2007A" HeaderText="2007A" 
            SortExpression="Year2007A" >
        <ItemStyle Wrap="False" />
        </asp:BoundField>
        <asp:BoundField DataField="Year2007B" HeaderText="2007B" 
            SortExpression="Year2007B" >
        <ItemStyle Wrap="False" />
        </asp:BoundField>
        <asp:BoundField DataField="Year2008A" HeaderText="2008A" 
            SortExpression="Year2008A" >
        <ItemStyle Wrap="False" />
        </asp:BoundField>
        <asp:BoundField DataField="Year2008B" HeaderText="2008B" 
            SortExpression="Year2008B" >
        <ItemStyle Wrap="False" />
        </asp:BoundField>
        <asp:BoundField DataField="Year2009A" HeaderText="2009A" 
            SortExpression="Year2009A" >
        <ItemStyle Wrap="False" />
        </asp:BoundField>
        <asp:BoundField DataField="Year2009B" HeaderText="2009B" 
            SortExpression="Year2009B" >
        <ItemStyle Wrap="False" />
        </asp:BoundField>
        <asp:BoundField DataField="Year2010A" HeaderText="2010A" 
            SortExpression="Year2010A" >
        <ItemStyle Wrap="False" />
        </asp:BoundField>
        <asp:BoundField DataField="Year2010B" HeaderText="2010B" 
            SortExpression="Year2010B" >
        <ItemStyle Wrap="False" />
        </asp:BoundField>
        <asp:BoundField DataField="Year2011A" HeaderText="2011A" 
            SortExpression="Year2011A" >
        <ItemStyle Wrap="False" />
        </asp:BoundField>
        <asp:BoundField DataField="Year2011B" HeaderText="2011B" 
            SortExpression="Year2011B" >
        <ItemStyle Wrap="False" />
        </asp:BoundField>
    </Columns>
    <EditRowStyle BackColor="#FFFF66" />
    <FooterStyle BackColor="#507CD1" Font-Bold="True" ForeColor="White" />
    <HeaderStyle BackColor="#507CD1" Font-Bold="True" ForeColor="White" />
    <PagerSettings Mode="NumericFirstLast" Position="TopAndBottom" />
    <PagerStyle BackColor="#507CD1" ForeColor="#000099" HorizontalAlign="Left" 
        VerticalAlign="Middle" Font-Bold="True" Font-Size="Medium" />
    <RowStyle BackColor="#EFF3FB" />
    <SelectedRowStyle BackColor="#D1DDF1" Font-Bold="False" ForeColor="#333333" />
    <SortedAscendingCellStyle BackColor="#F5F7FB" />
    <SortedAscendingHeaderStyle BackColor="#6D95E1" />
    <SortedDescendingCellStyle BackColor="#E9EBEF" />
    <SortedDescendingHeaderStyle BackColor="#4870BE" />
</asp:GridView>
    <br />

   </asp:Content>

Open in new window

Partial Class _Default
    Inherits System.Web.UI.Page

    Protected Sub ddlRowsPerPage_SelectedIndexChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles ddlRowsPerPage.SelectedIndexChanged
        GridView1.PageSize = Convert.ToInt32(ddlRowsPerPage.SelectedValue)
    End Sub
End Class

Open in new window

AhelblingAsked:
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

plusone3055Commented:

use a load event in your .VB file

 Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load

    End Sub
0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
AhelblingAuthor Commented:
Ok, I understand page_load event, but what shall I do with it to display all records, then filtered records on selected indexhchanged events for the dropdowns?

Do I need multiple SQLDataSources for this? Can I tie more than 1 to a gridview?
0
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
ASP.NET

From novice to tech pro — start learning today.