C# - Use An Array To Populate A Listbox?
Jan 7, 2010
The website I am working on will contain a drop-down list that shows a number of reason codes.
Is it possible to populate a drop-down list with an array derived from a custom class?
Something like this:
ASPX Page
<asp:DropDownList ID="ddlReasonsWhy" runat="server"></asp:DropDownList>
ASPX Code Behind
protected void Page_Load(object sender, EventArgs e)
{
//instantiate custom class
Class1 reasonsList = new Class1();
//populate reasons list
[Code]....
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Similar Messages:
Mar 26, 2011
I am designing a program that will let me enter the name of an item to swap and adds the swap to an array list when a button Add is pressed. Once the item is added to the array list a Sub Procedure should be called which displays the contents of the array list in a list box.
The system will also allow me to remove items from the array list using a Remove button
followed by updating array list.
I have done some part which puts item into the listbox1 which i named lstSwapList.I would need some assistance on the Sub Procedure to display the Value or Description on the other listbox2 which i have also named lstContent,if a value is selected from the listbox1.
I would also want to know how to update the Listbox content,However i hv added a sample of the way i guess it may be.
Any complete solution from anybody on the Sub Procedure and the Update Swap procedure will be greately appreciated.
The script below is what i have done so far.
Partial Class _Default
Inherits System.Web.UI.Page
Protected Sub lstContent_SelectedIndexChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles lstContent.SelectedIndexChanged
End Sub
Protected Sub lstSwapList_SelectedIndexChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles lstSwapList.SelectedIndexChanged
End Sub
Protected Sub btnAddSwap_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnAddSwap.Click
Dim SwapValue As String = "Sixty Pounds"
Dim Counter As Integer = 8
Dim SwapN0 As Integer
lstSwapList.Items.Add(SwapValue)
lstSwapList.Items.Add(Counter)
lstSwapList.Items.Add(New ListItem("300", "1"))
lstSwapList.Items.Add(New ListItem("ASP.Net", "2"))
lstSwapList.Items.Add(New ListItem("Programming", "3"))
SwapN0 = lstSwapList.SelectedValue
For Counter = 0 To -1
SwapN0 = lstContent.Items.Count
Next
End Sub
Protected Sub btnDeleteSwap_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnDeleteSwap.Click
lstSwapList.Items.Remove(lstSwapList.SelectedValue)
End Sub
Protected Sub btnUpdateSwap_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnUpdateSwap.Click
End Sub
End Class
=======================================
Sub UpdateSwap(ByVal valueA As String, ByVal ValueBAs String, ByVal ValueC As Integer, ByVal ValueD As Date)
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Apr 9, 2010
Hey what i am trying to do is i have a listbox with some simple values in it
1
2
3
and what i want to do is add a value that has multiple values to it...for instance i want a value = All DEV which will represent many values in itself so that once ALL DEV is selected it actually has many different numbers assigned to it. Can this be done? I understand that the value 1 has just one value behind it, same as 2 and 3 but I want the All DEV one to have multiple values behind it such as 5,6,7,8 for clicking just the ALL DEV selection.
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Feb 11, 2010
From the asp.net page, I would like to view the reporting services reports i.e. the .rdl files.I am using a reportviewer to access one of the reports as follows. Notice that I have hardcoded the name of the .rdl report.
Question:There are several reports. The names are stored in a table in the database. Do you know how I can populate a listbox with the names of the reports but do not know how to show the selected report in the viewer. Notice that at present I am hardcoding just one name and not sure how to be able to show the selected report
<rsweb:ReportViewer ID="ReportViewer1" runat="server" ProcessingMode="Remote"
Font-Names="Verdana" Font-Size="8pt" Height="1000px" Width="1000px" >
<ServerReport ReportServerUrl="http://reportserver/reportserver"
[Code]....
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Nov 15, 2010
how to populate a drop down listbox (dlName) from a web service with last and first name i.e. (LastName, FirstName). My Web Service XML that I am requesting is as follows:
<?xml version="1.0" encoding="utf-16"?>
<FindPartnerContactsAction xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
<CompanyName>training</CompanyName>
<IntegrationLoginId>cscw</IntegrationLoginId>
[Code]....
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Mar 10, 2010
I have to set GridView.DataKeyNames(This is really a question about the syntax for a string array, in VB.Net.)
I am discovering the PrimaryKey columns names from within a loop, ie:
For Each fld As IEntityField In Me.llbDataSource.EntityCollection(0).PrimaryKeyFields 'fld.Name ' this is where the column name is stored, so I have to get this into an array Next I can not use this syntax.
GridView.DataKeyNames = new string() { "PowRatHP", "Voltage", "Phases", "Poles", "Drive" }
So, basically, how does one declare a string array (as required by GridView.DataKeyNames), and then populate the elements of the array from within a loop?
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Jul 17, 2015
How can i read multiple column values into an array list? I am trying to read a list of category names and category ids from database into an array list; i am then binding these values into drop-down list. With my current code, i am able to do with one column only but would like to pull both cat_name and cat_id so how can i do that?
aspxÂ
<asp:DropDownList ID="DropDownList1" runat="server" DataTextField="ct_name" DataValueField="ct_id" AppendDataBoundItems="true">
<asp:ListItem Value="-1">Select</asp:ListItem>
</asp:DropDownList>
code behind
private ArrayList GetDummyData()
[code]....
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Jan 3, 2011
1) 1 dropdownlist - department
2)Search button
3) 1 listbox that will display all the staff according to the selection of its department
So when i select the department and click search button, the listbox will be populated with the staff names.
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Jan 20, 2010
I am trying to populate the value(s) of a listbox that has multiple selections:
Assignment Preference:<br />
<asp:ListBox ID="assignmentPreferenceList" SelectionMode="Multiple" runat="server">
<asp:ListItem Value="">None</asp:ListItem>
<asp:ListItem Value="CONTRACTING">CONTRACTING</asp:ListItem>
<asp:ListItem Value="DIRECT HIRE">DIRECT HIRE</asp:ListItem>
<asp:ListItem Value="CONTRACTING-DIRECT HIRE">CONTRACTING-DIRECT HIRE</asp:ListItem>
</asp:ListBox>
I am using a datareader in code behind to "loop" through the values:
string sql4 = "Select * from assignmentPref where tID=" + (dr["id"].ToString());
SqlCommand comm4 = new SqlCommand(sql4, con3);
SqlDataReader dr4 = comm4.ExecuteReader();
while (dr4.Read())
{
assignmentPreferenceList.SelectedValue = (dr["assignmentPref"].ToString());
}
Works great with 1 assignment preference but with 2 or 3 it craps out.
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Jul 25, 2010
I need to know how to populate a multicolumn ASP listbox on a Web
form using excel 2003 data . ( 2 columns in the Listbox )
When the user makes a selection from the Web listbox I want to
populate part of the web form, but I want to post the full form data to
another spreadsheet. ( NOT ACCESS)
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Nov 8, 2010
I need to populate a listbox programmatically from 1 of 2 tables, depending upon user inputs at run time and I need to know how many rows to read. Otherwise, I get an exception error when I try to read data that does not exist after all rows have been read.
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Jan 13, 2010
I have been trying to populate either a listbox, dropdownlist, or textarea with a large amount of numbers. I can create the list by manually putting in the numbers I want but that is not what I really want to do. There are too many numbers anyway. Is there a way to use maybe an array and a for next loop to put many numbers in a list where you can scroll down and see each item entry.
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Feb 4, 2010
I am trying to create a dynamic table that is being built based on the value of a search text box. The Table will have probably 6 columns of 20(max) rows.
My problem is I can't figure out how to return the data from the web-service to the JS function in a way that will allow me to extract the data that I need.
Here is the web-service method I have currently:
[code]....
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Jan 9, 2011
I am trying to retrieve multiple values from the session variable in which I stored the values as List. Here's the code I applied but this gives me only the lst value from the list in the output.
Array k= yourlist.ToArray();
for (Int32 i = 0; i < k.Length; i++)
{
Int32 x = Convert.ToInt32(k.GetValue(i));
SqlCommand cmd2 = new SqlCommand("select id,name from plugins where id =" + x, con);
SqlDataReader dr2 = cmd2.ExecuteReader();
if (dr2.HasRows)
{
while (dr.Read())
{
ListBox2.DataSource = dr2;
ListBox2.DataBind();
}
}
dr2.Close();
cmd2.Dispose();
}
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May 7, 2015
Trouble to retriving gridview cell value in Listbox.
Code:
textbox1.Text=grddisplay.Rows[grddisplay.SelectedIndex].Cells[14].Text;
Listbox1.Text=grddisplay.Rows[grddisplay.SelectedIndex].Cells[14].Text;
textbox code work perfectly
Problem in listbox how to solve...
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May 7, 2015
Lets say I have ListBox1 (1,2,3,4,5,6) and a ListBox2 (A,B,C,D,E,F)..
and a Button and a GridView. Now when I click the Button. I want a GridView Column 0 to be populated by ListBox1 and Column 1 to be populated by ListBox2. . C# / Asp.net.
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Aug 11, 2010
I have a listbox which I need to populate with the results from a stored procedure. I have a class Ethics and I can call my stored proc there but I don't know how to populate the listBox from this point on. Here's what I have so far:
[Code]....
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Feb 3, 2010
The user has to select from the ListBox to populate the DataGrid control. However, the Default value in the ListBox does not cause the DataGrid to be populated. Why is this?
[Code]....
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May 7, 2015
I want to bind list item with selected value only, like i saved selected values of list item in Database as 1,5,8,9 in database.
Now in case of edit i want to fill list item with samevalues and select only those whose value i saved in database.
Try
Dim VerticaID As String
For Each item As ListItem In lstItem.Items
If item.Selected Then
VerticaID += item.Value + ","
End If
Next
VerticaID = VerticaID.Substring(0, VerticaID.Length - 1)
[Code]....
How to Select Only Selected values in list item.
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May 3, 2014
i have been trying to solve this issue for over a month and i tried many different things
i want my shopping cart list box to have items in it then I save all of those items in a session variable.  I pull that session out on my checkboxlist page and I want it to autocheck all the items that were in my previous listbox that are now in the session
I also want to to this the other way so I can check a new item in my checkboxlist and I want it to automatically put the item in the listbox The issues I have been getting is a ListItem error or a List<Product> Error it does not work no matter what ways I try it
Here is my code that I have tried
//LISTBOXES
<asp:ListBox runat="server" ID="AvailableProducts" Height="300px" Width="300px" SelectionMode="Multiple" ></asp:ListBox>
<br />
<asp:Button runat="server" ID="addProduct" Text=">>" Width="75px" OnClick="addProduct_Click1" />
</td>
<td style="width: 200px; text-align: center ">
<asp:Button ID="submitprods" runat="server" Text="Submit" OnClick="submitprods_Click" />
</td>
<td>
[CODE...
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Jul 18, 2010
I need to populate a listbox with queries from 2 sql tables, but I can only see how to populate it with 1 datasource.
Do I need to do some hand coding? If so, where should I put it?
I'd also like to add some text items to the listbox so I could say populate the listbox with a query, plus an "other" option, so that if "other" is selected, a textbox will appear that will let the user specify a new item.
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Aug 19, 2010
I need to know what would be the best choice of array to use given the following specifications. This array's size will be predermined upon the loading of the appication. All I want to do is be able to add values to this array and replace preexisting array items with new values without the array changing size. Someone suggested that I use a Dictionary Array Object? I would appreciate any suggestions.
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May 12, 2010
Iam getting an array of list from database to client side(javascript array). Now my aim to place those values in a div one by one and that div should attach to the textbox similar to Autocomplete extender.
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Feb 22, 2011
I'm trying to auto-populate a listbox of zip codes from a database table state_zipcode_plans based on the state a user selects from the previous listbox. I'm getting the error: Must declare the scalar variable @state_code.
[code]....
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Mar 4, 2010
I have two list boxes, one has a list of available users (about 1500 items) and the other is blank. There is a button to add the seleted items from the first list box to the second one. Both of these listboxes are within an update panel and for some reason it takes over 20 seconds for the items to show up in the second listbox.
Is this normal? Is there an alternate, faster way of doing this?
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