Forms Data Controls :: Looping Through A Listbox?
May 11, 2010
I have a ListView which has Product Code,Desc, ColorCode, Size and Quantity as the columns as well as a checkbox
The listbox sits within a panel.
The user enters the quantity and checks the item(s) they wish to purchase. They accept their selection by clicking a button the sit within the ItemView
Once they have made their order and clicked the button I want to make the panel disappear and display the items on the page.
how to iterate through the Listview and how to grab the items and close the panel
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Similar Messages:
Jan 11, 2010
I'm currently trying to move through all the values added to a listbox by the user, however, I want to retrieve the actual value of each item in the listbox and not the text.
I've gotten so far with the code below, but that only gets the text and not the value.
[code]....
How would I go about getting the value for each item in the collection?
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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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Dec 16, 2010
I want to loop through gridviewrowcollection using LINQ but cannot go do it..nstead of doing:
foreach (GridViewRow gd in gdNarratives.Rows)
{
}
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May 22, 2010
my datatble
name class mark address
a 1 23 c
b 2 23 d
c 3 56 4
how can i loop through cells in this datatable and bind with gridview.
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Mar 31, 2011
I need to loop through a list of check boxes when the user clicks an export button.
The check boxes are in a panel and depending on what check box is checked I export the tables to excel.
Here is the code.
[Code]....
What happens is it exports only the first checked box to excel and then stops.
What am I doing wrong? I need to export all the checked checkboxes to separate excel files.
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May 9, 2010
I am trying to add the checked rows into the database by looping through but im getting this error:
Object reference not set to an instance of an object.
Description:
An unhandled exception occurred during the execution of the current web request. review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.NullReferenceException: Object reference not set to an instance of an object.
Source Error:
[Code]....
Heres my add click event:
[Code]....
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Oct 7, 2010
I have two gridview. The first gridview with checkbox and if i check the checkbox in first grid that particular row will be binded to second grid. In second grid i have a textbox and dropdown. Have enabled pagination in both grids. When i check the checkbox in first grid i loop through all records in second grid to bind the previous values. Problem is since i have enabled pagination gridview row count only retuns current page row count. How to loop through all rows?.
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Mar 2, 2011
I have a Gridview that has Paging enabled, and I need to loop through all the rows of the data. Therefore, I assume I need to loop through the datasource instead of through the Gridview.
I change the datasource of my gridview at various times when running.
How can I get a DataView of the GridView's current DataSource, so that I can loop through it?
Something like:
Dim dv as DataView = DirectCast(GridView1.DataSource, DataView)
except that this comes back as Nothing, probably because a Datasource isn't a dataview.
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Dec 5, 2010
I know that the datagrid control loops through a database table from the first row to the last, but I want it to loop from the last row to the first. How can I do that? Also I wanted to know how could I drop some rows according to my needs while looping from end to start, so that the datagrid only displays those rows that I need to display?
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Jan 17, 2010
I am trying to looping thru a data table and update a column on each row. However after updating I am getting both before and after update records in the data table. Assuming there is only one column called "Qty" withing the data table and I want to double the value in the column. I use the following to perform updating but not getting my expected result.
[Code]....
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Jan 10, 2010
I have a gridview that serves as a confirmation for user input in a previous form from a previous page. The grid is databound to a temporary table where I store the user's initial selections. The user can confirm what they had submitted, (which may be more than one row of information, up to three classes) or go back and change. When they hit the confirm button, I loop through the gridview and enter a row in a permanent database for each row in the gridview. This works great.
However, I don't want the gridview to display all of the columns that are actually in the temp database, because I'm carrying over 'usersubmitted, datesubmitted', etc, from the previous page for each class selected and this is redundant. (I do need to use all of the columns when they submit, however, to make a new row with complete information for each selected class in the permanent database) So, when I set the usersubmitted column visible false, for example, in the gridview, the dataset table adapter insert function fails with a data type mismatch error. I'm assuming becuase the column has to be visible, becuase when I make it visible again it works.
Can you loop through a gridview and call on cells in columns that are not visible?
The first page is like this:
the user fills out his info once in text boxes
name ____
address____
then selects up to three classes in dropdowns:
class one dropdown ...
class two dropdown....
for each dropdown, I insert name, address, class selected into a temp db Second page.
Gridview should display only classes selected, one row for each, and not
name address class selected
name address class selected
then when they submit, I insert
name address class selected
name address class selected
one row for each in permanant database
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Jul 14, 2010
I am having a problem with this code, i had a post on this however this code is slightly different to that so i thought i would post a spearate thread.
Anyway, what i am trying to do is display job vacancies by the result of a DropDownList value. Now each job name has a description. The problem i am having is i need to display the results in this logic:
Job nameJob descriptionJob location. But what is happening is the job description (body) is repeating the more vacancies there are. This is the page:
http://kidsunlimited.co.uk/vacancies_test_two.aspx
If you select Deputy Nursery Manager from the DropDown and hit the Search button you will see the results. After listing the first two locations the description is repeated and then the 3rd location is shown after this. This is my code:
[Code]....
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Oct 28, 2010
I have the following function that translates the header row in a gridview:
[Code]....
When I added sorting to the gridview cell.Text does not work anymore. How can I access the header text in the cell?
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Feb 12, 2010
I need to have maybe 5 threads running which all use the same DataSet and need to loop through all the rows retrieved but each row must be processed by one thread only (e.g. I don't want row 1 to be processed by thread 1 and thread 3).
I can also use a DataReader if that helps, but I need to dow some locking logic I would have thought.
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May 11, 2010
I am using a page based on a masterpage file with a content section that does not have access to the form. I was wondering how do I go about looping through the textbox controls on the page, I have tried the following
[code]...
However this does not find any of my controls on the page. I pass in the Me value and it still can't find any of the controls.
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Aug 19, 2010
How would I loop through controls on a content page to set allowreorder of all reorderlists to false.
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Mar 7, 2011
I've spent the last three days searching for a reason why I cannot loop through controls on a page link with a Master Pages, and have tried every example found on the web with no joy.
The most resent and the one resource that makes since was found on ASP.Net, but unfortunately it creates an infinite loop and dies. Link for my latest attempt: [URL]
This post was written in C# and I may have missed something in the conversion over to VB shown below.
I have around 100 checkboxes on this page that I am trying to load into a Array List to evaluate on the page code behind when returned by the function.
[Code]....
[Code]....
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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 14, 2011
how I can read the selected field from the listbox?I have MSAccess table attached to the app.I can get to the properties, but I don't know which property gets me the data of the specific field.In VB it would be "listbox1.Column(x)", where 'x' represents the column number in the listbox1.I am using Microsoft Visual Web Developer 2010 Express
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Nov 16, 2010
I have a detailsview which is used to input data into an SQL database. Some of the fields contain drop down menus which are populated from the database.
I also have a form that allows the user to select mutiple values from a listbox (populated from an sql database) by moving the required items from one list box containing all the available items into a second one containing the selected items. There is also a text box which is used to filter on the available items. When this is passed through to a stored procedure to be put into the database, it is passed as a comma delimited string containing all the selected values.
This works fine on a separate form, however I would like to include it in one of the fields of the detailsview. This creates a BC30451: Name 'ListBox1' is not declared error. I have looked for hours on the internet to try and resolve this but cannot find what I need for how to declare the list for use within the detailsview.
Here is the code for both the working multiselect form and the code for when I have tried to integrate it into the detailsview:
[Code]....
Multi-Select (CodeBehind):
[Code]....
DetailsViewForm:
[Code]....
DetailsView (CodeBehind):
[Code]....
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Jul 13, 2010
I want to select the multiple items in the listbox.....for eg in my listbox there are five itemsapple,pear,lotus,red,blue.on button click i want to select two items from the listbox.
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May 18, 2010
I want to fill gridview dynamically ,and I filled it with dropdowns and textboxes. I gave values after filling.
My question is how can I get dropdownlist.value , it is dynamic and I have no id.
I have a datatable, which contains my dropdowns and textboxes.
I have a class that gives type of object
public
long showdrpdwnlist{
get{.. }
set{..}
[Code]....
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Nov 28, 2010
I have a search option which a person can use a multi select listbox. I have it coded so it would loop through to see if its selected or not. I also have a stored procedure where the sql statement is coded for the select statement. For some reason, its not populating my gridview. Where am I doing wrong? Below is the code and stored procedure.
[Code]....
[Code]....
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Jul 13, 2010
I want to display data in a listbox on the bases of group.
Eg.
india
Mumbai
Delhi
UK
England
USA
Msahatem
ererere
tytytty
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