Dropdownlist Database Search
Mar 19, 2008
Hi all.
I have a huge problem that ive been sitting with for awhile.
I have a web page with 4 dropdownlist boxes on it
Gender:
Race:
Field:
Location:
Now a user can search a SQL db from selecting values from these 4 dropdownlist boxes which are equal to values in the db obviously.
when they have done that and pressed submit a Gridview is populated with the people corresponding details and the user is able to view each row seperately.
Now the problem i am having is that when i havent used all 4 selections for eg
Gender: null (no value selected)
Race: Black
Field: Accounting
Location: Los Angeles
then no information is returned from the db in the gridview.
im using a sqldatasource to populate the gridview and here is the query string that i am using :
Code:
sql
SELECT [title], [gender], [initials], [name], [surname], [birthdate], [postaladdress], [suburb], [city], [zipcode], [criminalrecord], [drivers], [maritalstatus], [dependants], [citizenship], [province], [contactref], [hometel], [cell], [jobtitle], [relocate], [emmigrate], [email], [worktel], [enddate], [startdate], [FIELD], [education], [company], [positionheld], [jobdescription], [contactperson], [contacttel], [startdate2], [contactperson3], [jobdescription3], [positionheld3], [company3], [enddate3], [startdate3], [contacttel3], [other] FROM [cvinformation] WHERE (([race] = CASE WHEN @race IS NOT NULL THEN @race ELSE [race] END) AND ([province] = CASE WHEN @province IS NOT NULL THEN @province ELSE [province] END) AND ([education] = CASE WHEN @education IS NOT NULL THEN @education ELSE [education] END))
what i want to do is whether the user doesnt choose any selection and leaves the choice null that ALL the information in the table of the db be shown and even if they only choose 2 values and leave the others null then it still brings back the information from the criteria chosen..
Is this possible.?
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Nov 28, 2006
hello..i need your help to provide me the idea and code how to view the data from database based on search criteria from user's input?the user's may fill up textbox and choose a criteria from dropdownlist...i am so no idea how to code it since i am fairly new in asp.net
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Dec 19, 2003
How do you get info from an SQL database to be displayed on a dropdownlist?
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Nov 24, 2006
Hey I just wanted to know if anyone could tell me how to bind values from a database to a dropdownlist?
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Feb 13, 2008
i have 2 dropdownlist which is ddlCategory and ddlItem.i want<<< a)both ddl get data from sql db.b)view the data in gridview. i need code in vb.net to retrieve and post.tq
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Apr 25, 2006
Hello,
I'm attempting to generate a dropdownlist by binding it to a database table. My screen has a view of the records plus a footer for inserting new records. I want to populate a drop down list of items from the database on both FooterTemplate and EditItemTemplate. I can successfully create the list on FooterTemplate (the insert new record fields). Here, I have no problems with my database connections.
On page load, if I hit 'Edit', it gives me this error:
There is already an open DataReader associated with this Connection which must be closed first.
I tried closing the datareader and I get an error: Invalid attempt to Read when reader is closed.
Here's the snippet of code:
Private Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
'Put user code to initialize the page here
LoadDataFromDB()
If Not IsPostBack Then
DataBindGrid()
End If
End Sub
Sub LoadDataFromDB()
Dim strSQLStmnt As String
Dim cmdDefaults As SqlCommand
' Create new command object passing it our SQL query
' and telling it which connection to use.
strSQLStmnt = "SELECT tblTemplates.TemplateID, tblTemplates.Description, " _
& "tblTemplates.Tuition, tblTemplates.Books, tblTemplates.TrainingTable, tblTemplates.Housing, " _
& "tblResidency.ResidencyType, tblCategory.Type, tblCategory.Description AS CategoryDesc, " _
& "tblScholarship.ScholarshipType FROM tblTemplates INNER JOIN tblResidency ON tblTemplates.ResidencyID = " _
& "tblResidency.ResidencyID INNER JOIN tblScholarship ON tblTemplates.ScholarshipID = tblScholarship.ScholarshipID " _
& "INNER JOIN tblCategory ON tblTemplates.CategoryID = tblCategory.CategoryID"
cmdDefaults = New SqlCommand(strSQLStmnt, conDefaults)
' Open the connection, execute the command, and close the connection.
conDefaults.Open()
rdrDefaults = cmdDefaults.ExecuteReader(System.Data.CommandBehavior.CloseConnection)
DefaultsDataGrid.ShowFooter = True
End Sub
Sub DataBindGrid()
DefaultsDataGrid.DataSource = rdrDefaults
DefaultsDataGrid.DataBind()
End Sub
Function BindResidency() As DataSet
'Populate the ddlDataSet
Const strSQLDDL As String = _
"SELECT Distinct ResidencyID, ResidencyType FROM tblResidency"
Dim myDataAdapter As SqlDataAdapter = New _
SqlDataAdapter(strSQLDDL, conDefaults)
myDataAdapter.Fill(ddlDataSet)
Return ddlDataSet
End Function
And the asp.net:
<asp:TemplateColumn HeaderText="Residency"> <ItemTemplate> <%# Container.DataItem("ResidencyType") %> </ItemTemplate> <FooterTemplate> <asp:DropDownList id="add_residency" runat="server" Width="178px" DataSource="<%# BindResidency() %>" DataTextField="ResidencyType" DataValueField="ResidencyID"> </asp:DropDownList> </FooterTemplate> <EditItemTemplate> <asp:DropDownList id="edit_residency" runat="server" Width="178px" DataSource="<%# BindResidency() %>" DataTextField="ResidencyType" DataValueField="ResidencyID"> </asp:DropDownList> </EditItemTemplate> </asp:TemplateColumn>
Any help would be appreciated!
Thanks,
Curtis
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Apr 21, 2008
Hi all,
I am trying to write a web page connected to an sql database of my MP3 files. I have a dropdown list box that populates with the artist, this hopefully being used to filter results into a datagrid. However, i am having a problem with the ddlb box repopulating on post back, i trawled the news groups and coded the population of the ddlb within an "if not page.postback" statement but to no avail. If i connect the ddlb to another sql database i have, the page reloads with the selctedvalue retained. So the theory is now that it is the SQL database, (is this a limitation of SQL express?) and i am having troubleshooting this. Here is the SQL of the databse:
USE [mp3]GO/****** Object: Table [dbo].[Table_1] Script Date: 04/21/2008 20:40:21 ******/SET ANSI_NULLS ONGOSET QUOTED_IDENTIFIER ONGOCREATE TABLE [dbo].[Table_1]([Title] [nvarchar](50) NOT NULL,[Artist] [nvarchar](50) NULL,[Album] [nvarchar](50) NULL,[Year] [nvarchar](25) NULL,[Comment] [nvarchar](500) NULL,[TrackNumber] [nvarchar](10) NULL,[path] [nvarchar](300) NOT NULL,[genre] [nvarchar](25) NULL,[id] [int] IDENTITY(1,1) NOT NULL,CONSTRAINT [PK_Table_1_1] PRIMARY KEY CLUSTERED ([id] ASC)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]) ON [PRIMARY]
Any help much appreciated.
Cheers
Billy
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Mar 1, 2007
Can anyone tell me how to search an SQL database for a given key word in a textbox? I basically have a database that has a qualifications column and this column needs to be searched for the data given in the textbox. Which is the best method to search for the data? Is it a simple SQL query or an XML based search engine type? Can anyone give any suggestions regarding this? If XML is efficient then how do I use it to query my database, as I'm pretty new in XML based searching.Thanks
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Nov 22, 2007
hi there,
i am doing a school project and i need to have this search engine that will search the data that i have stored inside the database and display the results out
can anyone help?
thanks
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Aug 9, 2006
I'm just wonder if this is a bug in MS Search or am I doing something wrong.
I have a query below
declare @search_clause varchar(255)
set @Search_Clause = ' "hepatitis b" and "hepatocellular carcinoma"'
select * from results
where contains(finding,@search_clause)
I don't get the correct result at all.
If I change my search_clause to "hepatitis" and "hepatocellular carcinoma -- without the "b"
then i get the correct result.
It seems MS Search doesn't like the phrase contain one letter or some sort or is it a know bug?
Anyone know?
Thanks
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Oct 18, 2006
Hello:I have add a DropDownList to my GridView and binded the dropdownlist to a field from a select statement in the SQLDataSource. I have EnabledEditing for my GridView. The GridView is populated with information from the select statement. Some of the information returned from the select statement is null. The field where the dropdownlist is binded it is null in some cases and does not have a value that is in the dropdownlist so I get and error when I attempt to do an update. 'DropDownList1' has a SelectedValue which is invalid because it does not exist in the list of items.Parameter name: value Is there a way to get around this besides initializing all the columns in the table that are going to be binded to a dropdownlist to a value in the dropdownlist?
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Nov 8, 2006
Hi,
I have sqldatasource that i set up in VS2005. i have a dropdownlist using this source. Data is added to the db from a different app and i want this dropdownlist to use the latest data on a page refresh.
However i can not refresh the sqldatasource - the dropdownlist does not show the latest additions to the db - i hae to rebuild to see them. i tried turnning 'enable caching' and 'enable viewstate' to false but no luck.
How is this done.
Thanks.
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Oct 26, 2007
I'm using the GridView to display some accounting infromation. I have a project where I have a 14 character control number. I would like to have a dropdown list to select the account classification of records to be displayed. The accounting classification is the first two characters of the control number. So the dropdown list needs to show unique first two characters and the GridView will be filtered on these two characters. I have been trying to use "substring" in the ASP.NET code; not even sure you can.
Any suggestions on how to accomplish this would be greatly appreciated. See code below:
<asp:DropDownList ID="DropDownList1" runat="server" AutoPostBack="True" DataSourceID="SqlDataSource2"
DataTextField="control_num" DataValueField="control_num">
</asp:DropDownList><asp:SqlDataSource ID="SqlDataSource2" runat="server" ConnectionString="<%$ ConnectionStrings:GPCRReportsConnectionString %>"
SelectCommand="SELECT DISTINCT [substring(control_num,1,2)] FROM [Request]"></asp:SqlDataSource>
ERROR: Invalid column name 'substring(control_num,1,2)'.
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Jan 30, 2008
Hi folks,
I'm in trouble getting an dropdownlist inserting its selected value into an .mdb
I'll insert my datasource code. There is another dropdownlist in this formview working good.
There is a datafield ID_Org_Einheit in the database to gather the value.
Could you please look this over?
Many thanks
Rosi
This is the dropdownlist
<asp:DropDownList ID="DDL_Org_alle" runat="server" DataSourceID="SDS_Org_alle" DataTextField="OE_gegliedert"
DataValueField="ID_org">
</asp:DropDownList>
and the datasource
<asp:SqlDataSource ID="SDS_insert_FB_log" runat="server" ConnectionString="<%$ ConnectionStrings:FahrtenbuchConnectionString %>"
InsertCommand="INSERT INTO tab_Fahrtenbuch_log([Datum_Eintragung], [Fahrer], [ID_Org_Einheit], [pol_Kennzeichen], [ID_Einsatzzweck], [Strecke_von], [Strecke_bis], [Zeit_von], [Zeit_bis], [km_von], [km_bis]) VALUES (@Datum_Eintragung,@Fahrer,@ID_Org_Einheit,@pol_Kennzeichen,@ID_Einsatzzweck,@Strecke_von,@Strecke_bis,@Zeit_von,@Zeit_bis,@km_von,@km_bis)" ProviderName="<%$ ConnectionStrings:FahrtenbuchConnectionString.ProviderName %>"
SelectCommand="SELECT Datum_Eintragung, Fahrer, ID_Einsatzzweck, Strecke_von, Strecke_bis, pol_Kennzeichen, ID_Org_Einheit, Zeit_von, Zeit_bis, Bemerkung, km_von, km_bis FROM tab_Fahrtenbuch_log">
<InsertParameters>
<asp:FormParameter FormField="Datum_EintragungTextBox" Name="Datum_Eintragung"/>
<asp:FormParameter FormField="FahrerEintragTextBox" Name="Fahrer"/>
<asp:FormParameter FormField="DDL_Org_alle" DefaultValue="1" Name="ID_Org_Einheit"/>
<asp:FormParameter FormField="polKennzTextBox" Name="pol_Kennzeichen"/>
<asp:FormParameter FormField="DDL_Einsatzzweck" DefaultValue="1" Name="ID_Einsatzzweck" Direction="Input" Size="3" /><asp:FormParameter FormField="StartTextBox" Name="Strecke_von"/> <asp:FormParameter FormField="ZielTextBox" Name="Strecke_bis"/>
<asp:FormParameter FormField="AbfahrtTextBox" Name="Zeit_von"/>
<asp:FormParameter FormField="AnkunftTextBox" Name="Zeit_bis"/><asp:FormParameter FormField="kmFahrtBeginnTextBox" Name="km_von"/> <asp:FormParameter FormField="kmFahrtEndeTextBox" Name="km_bis"/>
</InsertParameters></asp:SqlDataSource>
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Mar 3, 2008
Need a little help! I am trying to insert ListItems values from a DropDownList into a database table. However in the code behind I am continuosly met with the error Name 'ddltest' is not declared. As you can see from the code below ddltest is an object with the ID ddltest. What am I doing wrong?
Protected Sub ddltest_SelectedIndexChanged(ByVal sender As Object, ByVal e As System.EventArgs)Dim MyVar As String = ddltest.SelectedItem.Value
If MyVar = "" Then
ErrorMessage.Text = "Please select a test"
Else
'Insert selection into databaseDim oConnection As New SqlConnection
Dim oCommand As SqlCommand
Dim sConnString As String
Dim sSQL As String
sConnString = "Data Source=.SQLEXPRESS;AttachDbFilename=|DataDirectory|xxxxx.mdf;Integrated Security=True;User Instance=false"oConnection = New SqlConnection(sConnString)
sSQL = "INSERT INTO testDB(Myxxxx) Values (@Myxxxx)"
oConnection.Open()oCommand = New SqlCommand(sSQL, oConnection)oCommand.Parameters.Add(New SqlParameter("@Myxxxx", MyVar))
oCommand.ExecuteNonQuery()
oConnection.Close()
ErrorMessage.Text = "You selected " & MyVar & " and it has been added to the database."
End If
End Sub
<asp:TemplateField HeaderText="Test">
<EditItemTemplate>
<asp:DropDownList ID="ddltest" runat="server" AutoPostBack="True" OnSelectedIndexChanged="ddltest_SelectedIndexChanged" >
<asp:ListItem Selected="True" Value="" ><-- Please Select a test --></asp:ListItem><asp:ListItem Value="1">1</asp:ListItem>
<asp:ListItem Value="2">2</asp:ListItem>
<asp:ListItem Value="3">3</asp:ListItem>
<asp:ListItem Value="4">4</asp:ListItem>
<asp:ListItem Value="5" >5</asp:ListItem>
</asp:DropDownList>
</EditItemTemplate>
</asp:TemplateField>
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May 7, 2008
hi,
how can i fill dropdownlist through code not through visit.and i need to know which is fastest and easy way for web application throught this below query.
cmd.Connection = conn
conn.Open()Dim ds As New DataSet
cmd.CommandText = "SELECT Emp_Name,Emp_ID FROM Employee "
da.Fill(ds, "data")
cmd.ExecuteNonQuery()
conn.Close()
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Feb 3, 2004
hi ,
need your help please
I have got a dropdownlist which is getting it's items and values from the table with in SQL server , everything works fine.
I just want to be able to select default item , so when the page is loaded the dropdown list default will be that selected item.
as an exmple if the drop downlist items and values are as follow
item ----> value
---------------------
city -----> 1
tokyo -----> 2
london ------>3
these info is imported from the database
and I want by default tokyo to be selected
many thanks
M
----------------------------------------
here is my code:
Dim sqlConnection As SqlConnection
Dim sqlDataAdapter As SqlDataAdapter
Dim sqlCommand As SqlCommand
Dim dataSet As DataSet
Dim dataTable As DataTable
sqlConnection = New SqlConnection("user id=sa;password=testfirm;database=ken_live;server=csfirm03")
'pass the stored proc name and SqlConnection
sqlCommand = New SqlCommand("Select * From _aci",sqlConnection)
'instantiate SqlAdapter and DataSet
sqlDataAdapter = New SqlDataAdapter(sqlCommand)
dataSet = New DataSet()
'populate the DataSet
sqlDataAdapter.Fill(dataSet, "AA")
'apply sort to the DefaultView to sort by CompanyName
dataSet.Tables(0).DefaultView.Sort = "bsheet"
city.DataSource = dataSet.Tables("AA").DefaultView
city.DataTextField ="bsheet" ' what to display
city.DataValueField ="bsheet" ' what to set as value
city.DataBind()
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Jan 16, 2006
Hi... im trying to insert whatever value a user selects from a drop down list box into a database.
So I have already stated that there are 5 different options (eg. 1,2,3,4,5) so I want it that when someone selects '2' and then clicks a button it inserts '2' into a db... I tried the following (DDL is the id of the drop down list box) :
Dim myCommand As SqlCommandDim objUsers As SqlTransactionDim strnumber As String = DDL.SelectedValueconnstring = System.Configuration.ConfigurationManager.AppSettings("ConnectionString")conUsers = New SqlConnection(connstring)conUsers.Open()objUsers = conUsers.BeginTransaction
"INSERT INTO tblsomething (number) VALUES (strnumber)"
myCommand = New SqlCommand(strSQL, conUsers)myCommand.Transaction = objUsersmyCommand.ExecuteNonQuery()objUsers.Commit()conUsers.Close()
- Anyway suffice to say that this isnt working sssooooo...... help. Please
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Mar 23, 2006
I've got the following code and it's not really what I want. With the below code I can select in a dropdownlist a value and in the other dropdownlist the correspondending value will be selected. But when I select a value the second dropdownlist won't be filled with all the data in the database. It is filled only with the correspondending value and not with the rest of the value. When someone changes his mind and want to select a value in the dropdownlist it can't be done. Any ideas??Default.aspx:<body> <form id="form1" runat="server"> <div> <asp:Label ID="Label1" runat="server" Text="Botanische Naam: "> </asp:Label> <asp:DropDownList ID="DDL1" AutoPostBack="True" runat="server" OnSelectedIndexChanged="ChangeBotanicName" DataSourceID="SqlDataSource1" DataTextField="Botanische_Naam" DataValueField="Botanische_Naam"> </asp:DropDownList> <asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:BonsaiDataBaseConnectionString %>" SelectCommand="SELECT [Botanische Naam] AS Botanische_Naam FROM [BonsaiSoorten]"> </asp:SqlDataSource> <asp:sqldatasource id="SqlDataSource2" runat="server" connectionstring="<%$ ConnectionStrings:BonsaiDataBaseConnectionString%>" selectcommand="SELECT [Nederlandse Naam] AS Nederlandse_Naam FROM [BonsaiSoorten]WHERE [Botanische Naam] = @Title1"> <selectparameters> <asp:controlparameter name="Title1" controlid="DDL1" propertyname="SelectedValue" /> </selectparameters> </asp:sqldatasource> <asp:Label ID="Label2" runat="server">Nederlandse Naam:</asp:Label> <asp:DropDownList ID="DDL2" AutoPostBack="True" runat="server" OnSelectedIndexChanged="ChangeDutchName" DataSourceID="SqlDataSource3" DataTextField="Nederlandse_Naam" DataValueField="Nederlandse_Naam"> </asp:DropDownList> <asp:SqlDataSource ID="SqlDataSource3" runat="server" ConnectionString="<%$ ConnectionStrings:BonsaiDataBaseConnectionString %>" SelectCommand="SELECT [Nederlandse Naam] AS Nederlandse_Naam FROM [BonsaiSoorten]"> </asp:SqlDataSource> <asp:sqldatasource id="SqlDataSource4" runat="server" connectionstring="<%$ ConnectionStrings:BonsaiDataBaseConnectionString%>" selectcommand="SELECT [Botanische Naam] AS Botanische_Naam FROM [BonsaiSoorten]WHERE [Nederlandse Naam] = @Title2"> <selectparameters> <asp:controlparameter name="Title2" controlid="DDL2" propertyname="SelectedValue" /> </selectparameters> </asp:sqldatasource> </div> </form></body>Default.aspx.vb:Partial Class _Default Inherits System.Web.UI.Page Sub ChangeBotanicName(ByVal Sender As Object, ByVal e As System.EventArgs) DDL2.DataSourceID = "SqlDataSource2" End Sub Sub ChangeDutchName(ByVal Sender As Object, ByVal e As System.EventArgs) DDL1.DataSourceID = "SqlDataSource4" End SubEnd Class
P.S. I posted this before but can't find it anymore so here it is again
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Dec 11, 2007
can someone please tell me if you can implement a drop down list within a table attribute.
If anyone could show me an example please do.
Kind Regards
Rob
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Nov 11, 2006
Using asp.net 2.0 and visual studio 2005. The question is regarding the following ER diagram: I've made Firstname, lastname, buildingID and RoomNum all required fields. I've got a modified GridView that displays all of the table Faculty columns. It's been modified so the BuildingID and DepID are resolved to their actual field names and displayed in a DropDownList. In the dropdown list I used for inserting (a seperate DetailsView control), I manually inserted an item into the Department dropdownlist which had the text "-- Select a Department --" with a value of -1. MS SQL didn't like that -1 value so I wrote the following code to fix it: protected void dsFaculty_Inserting(object sender, SqlDataSourceCommandEventArgs e)
{
if (e.Command.Parameters["@DeptID"].Value.ToString() == "-1")
{
e.Command.Parameters["@DeptID"].Value = null;
}
} That means of course DeptID is null, which is ok. The problem arises is when I try to edit that row in the GridView. I get the an error 'ddlDepartment' has a SelectedValue which is invalid because it does not exist in the list of items.Parameter name: valueIdeally, I'd like to make the dropdown list in the GridView show "-- None --" for the DeptID if it comes across a null value. I already tried playing around with the Command.Parameters in the dsFaculty_Selected function, but it didn't work. Ideas?
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Jun 9, 2007
I am using Visual Studio 2005 & SQL Server. How do i implement a DDL for users to select which value to input. like i can with Access. i do not need a table i think. if not the table would have only ID & Value.?
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Sep 24, 2007
How can I get two fields to appear side by side in the DropDownList? Ex. FName and LName
Thanks
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Feb 12, 2008
My goal is to populate a dropdownlist with only with users that are "Techs". I am using the membership database that you ccan set up through VWD. I added this column to the aspnet_Users table: IsTech as bit datatype. I thought I had the right SQL statement but apparently not, because I get an Invalid column name 'True'.Here is my statement: <asp:SqlDataSource ID="SqlDataSource3" runat="server" ConnectionString="<%$ ConnectionStrings:HRIServiceConnectionString1 %>" SelectCommand="SELECT [UserID], [FirstName]+ ' ' + [LastName] AS techid FROM [aspnet_Users] WHERE [isTech] = True ORDER BY [LastName], [FirstName]"> </asp:SqlDataSource>
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Mar 25, 2006
I am using the createuserwizard, and have set up my own profile table which hold first name, last etc. In my CreateUserWizard, the field for Vendor is a dropdownlist that is to be populated from a list in a database. I set up the form without the createuserwizard, and everything went skippy, but when I placed it into the wizard, I now cannot access the control of the dropdownlist.
I have tried doing..
Using SqlConnection As New SqlConnection(WebConfigurationManager.ConnectionStrings("Personal").ConnectionString)Dim VendorID As DropDownListVendorID = CType(CreateUserWizard1.FindControl("VendorName"), DropDownList)
Dim MyReader As SqlDataReaderDim sel As String = String.Format("SELECT VendorID, Name FROM Vendors")Dim MyCommand As SqlCommandMyCommand = New SqlCommandMyCommand.CommandText = selMyCommand.CommandType = CommandType.TextMyCommand.Connection = SqlConnectionMyCommand.Connection.Open()MyReader = MyCommand.ExecuteReader(CommandBehavior.CloseConnection)But when I go to databind, it says:Object reference not set to an instance of an object. VendorID.DataSource = MyReaderLine 30: VendorID.DataValueField = "VendorID"Line 31: VendorID.DataTextField = "Name"
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Nov 18, 2006
I have a listbox that lists countries....and if you choose a country, another listbox show cities in that country (fetched from a sql database)....And if you then chose a city in the second listbox, a dropdownlist will show restaurants in the city....(also fetched from a sql-database)...
Ok...I hope you understand...now to the problem....:
If you first chose a country, a city and a restaurant but then want to chose another country in the first listbox, the dropdownlist for the restaurants is still there filled with restaurants for the first country...I dont know how to "remove" the restaurants so that the dropdownlist is blank if someone switch country....
I think I need to do something in countryListbox_SelectedIndexChange....but I dont know what to write there....
I know that I can make the dropdownlist invisible by entering the following code:
sub countryListbox_SelectedIndexChange
dropdownlistRestaurants.visible = false
End sub
But I want it to be visible all the time!
Do you know what I could do?
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Oct 4, 2007
In sql server reports.How to remove <select A Value> from the dropdownlist after deploying the report.
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Aug 5, 2006
Hey all,
I've been searching for a while and haven't really found an answer for what I'm trying to do. Here it all is and someone can tell me if I'm going in the wrong direction to solve this.
I have a textbox set to a parameter of "SearchString" and a DropDownList with the SelectedValue paramter of "FilterValue". The parameters work, I've tested that. So here is the problem.
I am trying to use the "FilterValue" to pick the field that the "SearchString" searches with a LIKE statement (e.g. SELECT * FROM dbo.Units WHERE (@FilterValue LIKE '%'+@SearchString+'%'))
This, I've found out, doesn't work. I have this setup with a DataLayer.vb in my App_Code directory handling the SQL calls, while the normal CodeBehind is in the typical "Default.vb" page.
I will post code later as I don't have access to it right now, but if anyone can explain how a filter like this would work I would appreciate it!
Thanks,
-Matthew
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May 8, 2007
Hi Everyone,I am trying to load the data into the dropdownlist using stored procedure. But when I run the code, the dropdownlist is empty. The code is shown below. Please help! Thanks.
public DataSet getProvince() { DataSet ds = new DataSet(); SqlParameter myParam; string conString; SqlConnection myConnection; conString = ConfigurationManager.AppSettings["connectionString"]; myConnection = new SqlConnection(conString); SqlCommand cmd = new SqlCommand("stored_procedure_GetProvinces", myConnection); SqlDataAdapter adpt = new SqlDataAdapter(cmd); try { cmd.CommandType = CommandType.StoredProcedure; myParam = cmd.Parameters.Add("@province_key", SqlDbType.Int); myParam.Direction = ParameterDirection.Output; myParam = cmd.Parameters.Add("@province_name", SqlDbType.NVarChar, 200); myParam.Direction = ParameterDirection.Output; adpt.Fill(ds, "Provinces"); myConnection.Close(); } catch (SqlException ex) { Response.Write("Error: " + ex.Message); } return ds; }----------------------------------
create procedure stored_procedure_GetProvinces
(
@province_key int output,
@province_name nvarchar (200) output
)
As
Select @province_key=province_key, @province_name=province_name From province
GO
-------------------------
<asp:DropDownList id="Dropdownlist_Province" DataValueField="province_key" DataTextField="province_name" DataSource='<%# getProvince() %>' Runat="server" > </asp:DropDownList>
--------------------------------
if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[province]') and OBJECTPROPERTY(id, N'IsUserTable') = 1) drop table [dbo].[province]GOCREATE TABLE province (province_key int IDENTITY PRIMARY KEY,province_name nvarchar (200) NULL)GOINSERT INTO province(province_name) VALUES ('- Select -');GOINSERT INTO province (province_name) VALUES ('Ontario');GOINSERT INTO province (province_name) VALUES ('Alberta');GOINSERT INTO province (province_name) VALUES ('British Columbia');GOINSERT INTO province (province_name) VALUES ('Manitoba');GOINSERT INTO province(province_name) VALUES ('New Brunswick');GOINSERT INTO province (province_name) VALUES ('Newfoundland');GOINSERT INTO province (province_name) VALUES ('Northwest Territories');GOINSERT INTO province (province_name) VALUES ('Nova Scotia');GOINSERT INTO province (province_name) VALUES ('Nunavut');GOINSERT INTO province (province_name) VALUES ('Prince Edward Island');GOINSERT INTO province (province_name) VALUES ('Quebec');GOINSERT INTO province (province_name) VALUES ('Saskatchewan');GOINSERT INTO province (province_name) VALUES ('Yukon Territory');GO
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Jul 27, 2007
Say a record has four columns in { Emp#, firstName, secondName, thirdName, spouseName }.
Now if you configure a sql datasource for a dropdownlist to return all columns, only Emp# will be displayed in the dropdownlist, the other columns wont be listed.
Is there a way to list the values of all columns in the dropdownlist using the sql datasource or in ADO.net code.
Thanks.
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Sep 12, 2007
Hi All,
In my scenario, I am using one sqldatasource with two columns
1. Code_ID
2. Code + ' - ' + CompanyName As Display
Now I bind ddlCompany.datatextfield = Display
ddlCompany.datavaluefield = Code_ID
But the problem is when my CompanyName is NULL value, it does not show my Code too....for example
Code = 1098 CompanyName = NULL
Sql query returns me NULL for this combination....and so my dropdownlist shows blank......can anyone show me the alternative.
Thanking in advance,
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Feb 27, 2008
Hi iam working with two dropdownlists,one gets the data dynamically when the pageload.later after selecting particular item in the dropdownlist1 i must get data to the dropdownlist2 depending on 1.
For example:
Dropdownlist1 is for industry and 2 is for company.
when i select particual industry in ddl1 i must get companies based on this industry in ddl2.Both the Industry name and company name are maintained in two different tables industry and company with common field ID.please help me with a stored procedure to sort out this problem...
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Apr 22, 2008
I have two DropDownList controls, ddlGroup and ddlLocation.
The contents of ddlLocation will be determined by the selection of ddlGroup. A better explanation is as follows:
ddlGroup =
ADVANCED DEVELOPMENT
DESIGN
HEAD TEST
INK R&D
JETTING
PROCESS
RELIABILITY
The SQL query that shows my logic is:
IF @Group = 'ADVANCED DEVELOPMENT' SELECT Location FROM tblLocations WHERE Location like 'AD%'ELSE IF @Group = 'DESIGN' SELECT Location FROM tblLocations WHERE Location like 'DE%'ELSE IF @Group = 'HEAD TEST' SELECT Location FROM tblLocations WHERE Location like 'HT%'ELSE IF @Group = 'INK R&D' SELECT Location FROM tblLocations WHERE Location like 'INK%'ELSE IF @Group = 'JETTING' SELECT Location FROM tblLocations WHERE Location like 'JT%'ELSE IF @Group = 'PROCESS' SELECT Location FROM tblLocations WHERE Location like 'PR%'ELSE IF @Group = 'RELIABILITY' SELECT Location FROM tblLocations WHERE Location like 'RL%'
I need to define the content of ddlLocation after a selection is made in ddlGroup; how can I accomplish this using Visual Web Developer 2008 Express Edition?
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