Searching SQL Db And Returning Results To Gridview


I am in the process of building a search function for an application (VS2005,, VB code, and AJAX functionality).The user's form has a textbox (for an input string) and two drop-downs.  The user would then click on a "Search Now" button, and the data should populate
in a Gridview to the left of the search form.  I'm trying to search over an SQL database and need to know how to exactly implement what I have so far:

<div id="mcb" style="background-color:#2e4b5b; width:195px; height:410px; float:left">
     <div id="ht" style="background-color:#1b2c36;padding:10px; border-bottom:solid 1px #fffdff; width:175px;float:left;">
           Quick Search
<div style="clear:both;"></div>

<div style="padding:10px; background-color:#2e4b5b">
      <div id="tfta" style="padding:5px 0px 0px 0px">
                <b>Vendor Name</b>
                <asp:TextBox ID="txtVendorFilter" runat="server"></asp:TextBox>
                <div style="font-size:1px; width:150px; height:1px; background-color:#8FA71F"></div><br />
                 <b>Contract Type:</b>
                 <asp:dropdownlist ID="ddlContractTypeSearch" runat="server" Width="155px">
                           <asp:ListItem Value="0">Select...</asp:ListItem>
                           <asp:ListItem Value="1">Vendor Maintenance</asp:ListItem>
                           <asp:ListItem Value="2">Consulting Contract</asp:ListItem>
                           <asp:ListItem Value="3">Hardware License</asp:ListItem>
                           <asp:ListItem Value="4">Software License</asp:ListItem>
                           <asp:ListItem Value="5">Statement of Work</asp:ListItem>
                           <asp:ListItem Value="6">Admin Svcs. Agreement</asp:ListItem>
                           <asp:ListItem Value="7">Master Service Agreement</asp:ListItem>

           <div style="font-size:1px; width:150px; height:1px; background-color:#8FA71F"></div><br />
                   <b>Sort By:</b>
                   <asp:DropDownList ID="ddlSortBy" runat="server" Width="155px">
                          <asp:ListItem Value="0">Select...</asp:ListItem>
                          <asp:ListItem Value="1">Contract Name</asp:ListItem>
                          <asp:ListItem Value="2">Contract Type</asp:ListItem>
                    </asp:DropDownList>             <div style="font-size:1px; width:150px; height:1px; background-color:#8FA71F"></div><br />
    <br />
    <asp:Button ID="btnUpdateFilter" runat="server" Text="Search" width="120px"/>
    <asp:Button ID="btnReset" runat="server" Text="Reset" /></div>


 Here's my select statement used to initially populate the Gridview (set up using the configuration of the Gridview):
SELECT [ContractID], [ContractName], [ContractType], [EffectiveDate], [TerminationDate] FROM [Contract]
Here's my btnUpdateFilter codebehind (VB):

Protected Sub btnUpdateFilter_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnUpdateFilter.Click
     Dim strVendorName As String
     Dim strContractType As String
     Dim strSortBy As String

     If txtVendorFilter IsNot "" Then
           strVendorName = txtVendorFilter.Text
     End If

If ddlContractTypeSearch.SelectedValue = 1 Then
      strContractType = "1"
ElseIf ddlContractTypeSearch.SelectedValue = 2 Then
      strContractType = "2"
ElseIf ddlContractTypeSearch.SelectedValue = 3 Then
      strContractType = "3"
ElseIf ddlContractTypeSearch.SelectedValue = 4 Then
      strContractType = "4"
ElseIf ddlContractTypeSearch.SelectedValue = 5 Then
      strContractType = "5"
ElseIf ddlContractTypeSearch.SelectedValue = 6 Then
      strContractType = "6"
ElseIf ddlContractTypeSearch.SelectedValue = 7 Then
      strContractType = "7"
      strContractType = "0"
End If

If ddlSortBy.SelectedValue = 1 Then
     strSortBy = "ContractName"
ElseIf ddlSortBy.SelectedValue = 2 Then
     strSortBy = "ContractType"
     strSortBy = "ContractName"
End If

End Sub


My question is, "how can I form the proper SQL statement", and then implement it so that my gridview will populate using my generated SQL Statement?

Thank you for the help!!!



Want Error Message To Appear When No Database Results Were Returned In GridView, Also Other GridView Issues.

Hi, I am seeking a hopefully easy solution to spit back an error message when a user receives no results from a SQL server db with no results. My code looks like this What is in bold is the relevant subroutine for this problem I'm having.   Partial Class collegedb_Default Inherits System.Web.UI.Page Protected Sub submit_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles submit.Click SqlDataSource1.SelectCommand = "SELECT * FROM [college_db] WHERE [name] like '%" & textbox1.Text & "%'" SqlDataSource1.DataBind() If (SqlDataSource1 = System.DBNull) Then no_match.Text = "Your search returned no results, try looking manually." End If End Sub Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load SqlDataSource1.SelectCommand = "SELECT * FROM [college_db] ORDER BY [name]" SqlDataSource1.DataBind() End Sub Protected Sub reset_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles reset.Click SqlDataSource1.SelectCommand = "SELECT * FROM [college_db] ORDER BY [name]" SqlDataSource1.DataBind() End SubEnd Class  I'm probably doing this completely wrong, I'm a .net newb. Any help would be appreciated. Basically I have GridView spitting out info from a db upon Page Load, but i also have a search bar above that. The search function works, but when it returns nothing, I want an error message to be displayed. I have a label setup called "no_match" but I'm getting compiler errors. Also, next to the submit button, I also have another button (Protected sub reset) that I was hoping to be able to return all results back on the page, similar to if a user is just loading the page fresh. I'd think that my logic would be OK, by just repeating the source code from page_load, but that doens't work.The button just does nothing. One final question, unrelated. After I set this default.aspx page up, sorting by number on the bottom of gridview, ie. 1,2,3,4, etc, worked fine. But now that paging feature, as long with the sorting headers, don't work! I do notice on the status bar in the browser, that I receive an error that says, "error on page...and it referers to javascript:_doPostBack('GridView1, etc etc)...I have no clue why this happened. Any help would be appreciated, thanks! 

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GabrielHelbigSafe Haven62119141.0000000.9375002.1428576404111519

MarkusJavorSafe Haven82927200.8695650.8000001.21739114501021218


AdamBiesenthalSafe Haven82929210.9130430.9130431.56521712631001015

ErikGalvezMelville82625180.7200000.7307691.24000011322101015 As you can see, all teams except for Safe Haven's have the correct AVG and OBP.  Since AVG is simply H/AB, it doesn't make sense for Gabriel Helbig's results to be 1.00000. Can anyone shed ANY light on this please?Thank you in advance,Markuu  ***As a side note, could anyone also let me know how I could format the output so that AVG and OBP are only 3 decimal places? (ex: 0.719 for the 1st result)*** 

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ALTER TABLE [dbo].[tbl_Project] CHECK CONSTRAINT [FK_tbl_Project_tbl_ProjectManager]
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CREATE TABLE [dbo].[tbl_Report](
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[ProjectStatusID] [int] NULL,
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ALTER TABLE [dbo].[tbl_Report] CHECK CONSTRAINT [FK_tbl_Report_tbl_ProjectManager]
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FROM tbl_Project P, tbl_ProjectManager M, tbl_ProjectStatus S
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AND (P.DueDate = (SELECT DueDate FROM tbl_Report WHERE ReportName = @ReportName) OR P.DueDate IS NULL)
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These are held in a seperate tbl as an order can be deliveryed in several stages.

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SELECT PDS_Login.Supplier_Products.ProductName, PDS_Login.Supplier_Products.ProductCode, dbo.Suppliers_POs_Details.POID,
dbo.Suppliers_POs_Details.PODetailsID, dbo.Suppliers_POs_Details.Qty, dbo.Suppliers_POs_Details.PricePerItem,
dbo.Suppliers_POs_Details.PoDetailsStatus, dbo.Suppliers_POs_Details.PoDateExpected, dbo.Suppliers_POs_Details.PODateReceived,
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AS QtyReceived
FROM dbo.Suppliers_POs_Details INNER JOIN
PDS_Login.Supplier_Products ON dbo.Suppliers_POs_Details.ProductID = PDS_Login.Supplier_Products.ProductID LEFT OUTER JOIN
dbo.Suppliers_POs_Details_Received ON dbo.Suppliers_POs_Details.PODetailsID = dbo.Suppliers_POs_Details_Received.PODetailsID
WHERE (dbo.Suppliers_POs_Details.POID = @POID)
GROUP BY dbo.Suppliers_POs_Details_Received.Qty, PDS_Login.Supplier_Products.ProductName, PDS_Login.Supplier_Products.ProductCode,
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The problem is, if there is more than one relating record in teh Received Qty tbl instead of that being added together as I want, two results appear...

It's obviously something simple but I can't seem to figure it out - anyone point me in the right direction?

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