Asp.net - Get The Selected Value Field Of Listbox?
Feb 9, 2012
I have Listbox, that I want to assign primary key, and a text (eg. students table). So i wrote this code.
mySQLCmd.CommandText = "SELECT studentname, studentid FROM studentstable WHERE Year(DOB) = " + selectedYear
Dim dt As New DataTable
myReader = myCmd.ExecuteReader()
[code]....
When I select something on the listbox, both of selecteditem and selectedvalue properties just return the student name, not the student id. So I get this error.
Error on Line2. Conversion from string "RichardCole" to type 'Integer' is not valid.I don't know why? So i do i get the studentid value back ? I need to know the ID coz name can't use as PK so.
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Jul 6, 2010
This is my code which i used to try this but it inserts only the last value in the listbox but i need all the selected values seperated by comma [code]...
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Jul 14, 2010
I'm trying to make the textbox field active when listbox selecteditems is change so I know I have to but something in the selecteditemchanged action of the listbox, but what?I tried:
Private Sub ListBox1_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ListBox1.SelectedIndexChanged
TextBox1.Enabled = True
End Sub
But it didn't work..
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Aug 23, 2002
I have a Datagrid that is from a table.When I highlight the row, and click my select button, how do I know what the value of a certain column is?
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Apr 14, 2012
I would like my website to allow users to download files which are stored as blobs on the database, the database holds fileID fileName and theFile. I have a grid view with two columns, fileName and a template column, which is databound to fileID and has a linkbutton. When the link is clicked it calls to a function which downloads the file. The function needs the fileID to download the file, how do I get the fileID bound to the selected linkbutton.
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Feb 8, 2011
I'm looking for the easiest way to bind data from a SqlDataSource to textboxes dropped in Visual Studio 2008.For example, I have 4 textboxes currently that have Address, City, State, Zip.I also have a SqlDataSource on the page fetching the ID of the record and selecting those 4 fields based on ID. How am I able to quickly bind each box to those particular fields selected? I would think this would be really straight forward - but seems it's not. Seems like the answer is funneled towards having to create a GridView or some type of control.
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Oct 5, 2007
I have three required field validator ,in that 2nd validator should not fire even if I don't enter any any value in the textbox. I tried with Javascript. But couldnt do it.
<%@ Page Language="VB" AutoEventWireup="true" CodeFile="Default.aspx.vb" Inherits="_Default" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "[URL]">
<html xmlns="[URL]">
<head runat="server">
<title>Untitled Page</title>
<script language ="javascript" type ="text/javascript" >
function step2()
[Code] .....
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Apr 15, 2011
I have an Entity Data Model with two entities in it "Roles" and "Users". There is a navigation property from I have a EntityDataSource and a GridView. The EntityDataSource points to the Users entity and has an Include="Roles" parameter.I've added a BoundField in the GridView that points to RoleName, a property of the entity Roles. However, when I execute the code I get the above error.I have used very similar code successfully in another application. Any ideas why this isn't working?
Here is my EntityDataSource:
<asp:EntityDataSource ID="EntityDataSource1" runat="server"
ConnectionString="name=pbu_checklistEntities"
DefaultContainerName="pbu_checklistEntities" EnableDelete="True"
EnableFlattening="False" EnableUpdate="True" EntitySetName="Users" Include="Role">
</asp:EntityDataSource>
And here is the BoundField:
<asp:BoundField DataField="RoleName" HeaderText="Role" SortExpression="RoleName" />
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Jan 7, 2012
If there are fields in a combo box as i press the drop down arrow. and if i select a field... then it should not b deleted using a backspace or anyother key..
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Apr 13, 2009
I am creating a search function which searches a database for keywords in a selected field in FilmTable (name of table to be searched)
This is the SQL I am using:
CODE:
It is saying there is an error in the FROM syntax
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May 7, 2012
I am trying to populate a listbox from access (and later SQL 2008) that will display all item names that are marked yes in another column. It is a validation for verifying whether or not it needs to be displayed. I am using the databinding method in the properties window and I am not sure how to do this without coding.
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Feb 22, 2010
I am trying to populate a listbox from access (and later SQL 2008) that will display all item names that are marked yes in another column. It is a validation for verifying whether or not it needs to be displayed. I am using the databinding method in the
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Mar 24, 2009
I am looking to save the contents of a listbox to a database, but I want all of the listboxes items to go into one field.
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Jun 9, 2011
i connect database with vb.net and also i receive a single value from my receiver through serial port. now i want to match this single data with one field of database. i have attached my code.
Public Class Form1
Private Sub OPEN_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
[Code].....
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Jul 28, 2011
My current code only selects a single item from a specific field. How do I make it populate the listbox with ALL the items in a field?
Try
conn.ConnectionString = "server=; username=; password= database="
conn.Open()
Dim sqlAdapter As New MySqlDataAdapter
[code]....
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Mar 21, 2012
i am trying to make a vb.net project for a travel agency ..... i have make all of the content of it but i got stuck in listbox .... i have added onnfiled of sql table into the listbox and now i want that when i select the list box content then all the other fields of a the row will automatically come in the rest of the textbox so i can add and delete it manually....... here is my code..... of one form(i have made 13 forms like that)
[Code]...
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Aug 18, 2010
I have multi select set to false and get this error
InvalidArgument=Value of '0' is not valid for 'index'. Parameter name: index
vb.net
Private Sub MembersList_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MembersList.SelectedIndexChanged
Try
[Code].....
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Jan 27, 2009
I have a form with a list box and a button. The list box is filled with text files from a folder. When you click the button whatever file is selected in the list box is then opened and each line of that file is added as an item in a list box on another form.I'm not sure what to code for if something in the first list box is not selected.
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Feb 10, 2012
I've being trying to work out a problem i've being having for a while now and i'm not sure if i'm over complicating it.When a form loads, it uses a for next loop to load an array of peoples names into a list box. However i want to extract the persons ID once their name has being clicked. I can make this work by using another for next loop until the selected name matches the an array number. However it fails if there are two people of the same name.Is there a command or piece of code that can extract the row number of the item selected?
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Aug 10, 2009
My code follows. I have six items (indices 0-6) and I'm trying to check if one has been selected or not. If not, then messagebox yells at you to select one. If it does, it tells you what you have selected. I'm having a horrible brain fart and contemplated coming here for about 45 minutes as I couldn't get it.
If ListBox1.SelectedItem.ToString <> "" Then
MessageBox.Show("You selected " + ListBox1.SelectedItem.ToString)
Else
MessageBox.Show("Please select an item.")
End If
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Apr 15, 2009
In .NET there doesn't seem to be a property to find the item just selected in a multi-select listbox; SelectedIndex always shows the first selected item. From memory VB6 had the ListIndex property that changed accordingly... Why remove a useful property ?
Duplicate: How to get the last selected item in multiselect ListBox?
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Mar 6, 2009
There is a listbox whith SelectionMode set to MultiExtended and it has multiple items selected.[code]...
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Jul 15, 2010
I need to cancel the selected item in the listbox if the number of selections exceeded from max number the user has defined. What should I do?
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Jul 18, 2010
I need a way of converting the listbox.selectedindex into hex and then writing it to a file(The writing is done using PackageIO.writer). The weird thing is the code i use works for most of it but on some of the writes and conversions it just converts the selectedindex to 00 when its not.
Dim Writer As New PackageIO.Writer(Filepath, Endian.Little)
Writer.Position = &HE24A
Writer.WriteUInt16(Convert.ToByte(ListBox3.SelectedIndex))
[code]....
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Nov 25, 2006
How can I delete all the selected items in a multi-select listbox in VB.NET?
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Nov 19, 2011
I have the below code that works great, until you have multiples of the same thing.example of data
burger
-tomato
+tomato[code].....
if i select the +tomato in wrap it remmoves the +tomato in burger (deleting the 1st oocurance of it) how can i fix that. i have played alot and can not figure it out.(ps the other list boxes are other data but it needs to remove the same "line" as each other. they are all changed to the same selected index when 1 is changed)
Dim value As String
Dim value1 As String
Dim value2 As object[code].....
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Jun 21, 2010
What im trying to do is display my details in a listbox then the one that is selected frm the listbox is displayed in the textboxes and when delete button is clicked it is flagged at deleted??? This is what should happen!!:@
I kow there is definitely a problem with this piece of code im setting the index and length to constant numbers so if a different name is clicked it does not work!! is there another way to set this to allow for any length or index position??
CustomerIDTextBox.Text = DisplayCustomersListBox.Text.Substring(0, 4)
SurnameTextBox.Text = DisplayCustomersListBox.Text.Substring(5, 7)
ForenameTextBox.Text = DisplayCustomersListBox.Text.Substring(12, 10)
[Code].....
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Apr 23, 2010
have this code here:
Dim decSubTotal As Decimal
Public g_selected As Integer
'dvd titles
[Code].....
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Nov 8, 2007
So, I need to be able to edit an item that has been selected in a listbox. I need to do so with a button click event. Theoretically, I know how to do this, because I know how to add an item, and how to remove one, and how to insert an item at a specific location.
'Dim strinput As String
'Dim Item As Object
'Dim index As Integer = lstList.Items.IndexOf(item)
'strinput = InputBox("Edit This Item")
'lstList.Items.RemoveAt(lstList.SelectedItem)
'lstList.Items.Insert(index, strinput)
however, this does not work at all. what am I doing wrong??
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Oct 10, 2011
I have loaded datatable to listview.Now when i try to do a selected index and retrieve data to display in respective text box. I find some error "input string format incorrect".but when i directly load from folder it works fine.
Data that retrieved from Datatable.Im not able to find the index of the row. But from folder and listed in ListView.Index value is found.
Dim breakfast As ListView.SelectedListViewItemCollection = Me.LOV.SelectedItems
For Each item1 In breakfast
index += Double.Parse(item1.SubItems(1).Text)
Next
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