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..
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
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
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
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.
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
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
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?
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.
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)'.
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 %>"
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
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()
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
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
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?
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.?
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>
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"
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:
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,
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
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.
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...
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?
