Formula In List View From Imported Data In Other Columns?
Jun 7, 2011
Another noob question from me...one of these days I'll get the hang of this VB!I am importing data from an Access table that has four columns/fields. I have set up the relevant headings etc on the list view control...but I have also set up a 5th column as I want to have that representing the percentage change between columns 3 and 4 (which are numeric).
Here's my code. What I want to know, is that having confused myself with code I've written / adapted from advice given etc where do I put in a forumula to add something to a column in my list view that is a calculation based on two columns imported from the table?
[Code]...
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Jun 22, 2010
how do you sort the data by columns in a list view, for example, clicking the title of the column to sort by ascending order.
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Nov 11, 2010
i have datagridview populated with stock code, name and description.And i have docked my datagridview to the bottom. so whenever the form is resized, the bottom section will be occupied completely with the datagridview.But i want to display one extra empty column and multiple empty rows to completely fill in the datagridview.The extra empty column width will be adjusted to the right end side of datagridview.And the no of empty rows will be generated based on how many is required to fill up to the bottomSo that i can create datagridview with full column and row even though some columns or rows are empty.
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Oct 6, 2011
I have list of columns in DataTable to be added in list view. I have specified to the listview of columns in the order to appear and Datas as well.[code]
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May 27, 2011
I was just wondering, if I have a list view control, with 2 columns, and insert items to those columns, ex:[code]My GOAL is to NOT use a lot of listviews controls to interact from one col to another. Like a drag and drop function between multiple columns.I have found a lot of examples but they only are between from one listview to another.Have you tried This? I want to do this in vb.net.[code]and some more for the Itemdrag and dragenter events.
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Nov 18, 2009
Im wondering how would i display the dropped items directory and icon in columns.
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Apr 16, 2012
Below code is supposed to update a table in oracle with rows imported. But it seems to update all columns in the table with only the first column which is imported from the CSV file. I figure its the "ReadFields" property which needs to manipulated/changed.
[Code]...
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Aug 7, 2010
I have a datagridview control that will be used to allow the user to input records. The control uses a combobox column to select a type of service. There is a rate associated with the type of service that I then want to display in the grid. The user then enters a quantity and the last column mulitplies the rate and quantity to get a total. I have the combobox , quantity and total columns figured out but I don't know how to get the rate column to automatically be selected when the type of service is selected. Below is the code.... sets up the datagridview
Dim dv As New DataView(LookupManager.Lookups.LookupServiceType)
Dim Column1 As New DataGridViewComboBoxColumn
With Column1
[code].....
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Aug 29, 2010
In the previous reply, you showed how to open a CSV in Excel. How does one determine the number of rows and columns that were imported?
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Aug 4, 2010
I have added a list box and now i need help to display the data about my employees in the list box. How am i supposed to do that, do we have to put in codes or need to use that small arrow near the list box.
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Jun 11, 2011
I want to bind data to telerik list view, if the database four record,each page of list view show 3 record, that means it will have an record show on 2nd page then still got 2 record was empty, so i want to show the first, two record under the fourth record,
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Mar 26, 2010
We have a project to make using the MS ACCESS as our database and VB.NET. The project called "ELECTRONIC DICTIONARY". I got trouble creating the code for retrieving the data in the list view of the VB.NET. please help me how..teach me what's the right codes for it. Here's my code:
[Code]...
IS this the proper code for this?We are required to retrieve only the WORDS in the database in list view. But we need to load the information of the books also.Admin Edit: Please use code tags when posting your code. Code tags are used like so =>
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Nov 19, 2009
In my MS Access database a certain column has been given a LookUp query so users can just select the appropriate entry from a drop down list.
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Jun 17, 2009
the code I can incorporate in my application which will allow me to transfer data from my listview to a notepad or .txt file
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May 12, 2009
I have a button1 and a listview , upon click of the button1 which is link to a FolderBrowserDialog tool ( In built in VB in which it will allow you to choose the folder you wan on your computer ) , i will select the foler i want and than it will show up in list view the path name and filesname including those in the subfolder inside the folder .
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Mar 12, 2008
I get some very generik trouble need to implement List View with Image in SubItem. All can be very fine ....But I need to use Virtual Mode. Whatever I search I haven't still found working solution's. I have found some C# code that seem's do that. But I can't convert it in VB.Net. let's explain detaly.
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Jul 13, 2009
I am trying to write the code needed to link two tables together. One table is a list box and the other table is a data grid view. What would the example of the code needed in order to link these tables together so that each time you click on an item in the list box, the data grid would then show the corresponding information that matches up with the selected item.
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Jul 1, 2010
I'm trying to fill a ListView control in a VB2005 project. It works fine from underpinning (Access) database IF all the data is present. However, if a field is blank (in this case - a field called "Actual Date" which is meant to be blank for this record), the ListView will stop populating at that point.I thought this may have been the 'CausesValidation' property of the ListView but that doesn't seem to change the behaviour.Is this an inherent feature of the ListView - if so it seems daft - or is there a property I need to change or an override that I need to code?
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Jun 22, 2010
I wonder how can I extract numerical data from a column of a list view and sum every and show in a label?
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Jun 18, 2009
Basically, I want to get the column data from a selected row in a ListView (non-MultiSelect).how to do it if it's just the first column (lvw.SelectedItems(0).Text) but how do I get the data from the other columns?
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Dec 27, 2011
I try to show my table data type in datagridview vb.net.[code]I try login using username "system". When I run this code, I got error message "ORA-00900: invalid SQL statement".
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Aug 15, 2011
I am trying to retrieve the data from MS Access Table to LIST-VIEW, its difficult for me to write the code
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Jun 30, 2010
I'm using this code to search a msacces db and display the data in a listview.The Search is fired after the text_changed event of a textbox. So each character is a search and also each backspace(here's where the real pain is) it will search. When I use backspace its very very slow! When I use 100 or even a 1000 records no problem but this db has 10.000 + records.Whitch event can I use to solve this problem or how can I adjust the code for faster search? ALs o when I test on a windows7 system, dualcore, 2gb memory, when I press a key it will take time before I see the character in the textboxs? Its a new system and only runs this program.I use a texbox to enter for example an artist name and a combobox where the user can choose to search on artis, title, genre etc. [code]
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Aug 1, 2011
I try to show my table data type in datagridview vb.net. Here is the sample code :
oradb = "Data Source=(DESCRIPTION=" _
+ "(ADDRESS_LIST=(ADDRESS=(PROTOCOL=TCP)(HOST=" & txtServer1.Text & ")(PORT=" & port1.Value & ")))" _
[code]....
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May 27, 2009
how to fill List View and Data Grid from a Database (SQL Server).
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Jul 18, 2011
I have the following "contact" data (exampled below) stored in an xml file.I've created a frmContacts windows form and placed a list box control inside it.I'm new to the list box but plan to have the users manage the list by letting them add, delete, and pick from it. For searching there should also be a sort function/button (by last name then first name).If the user deletes from the list the corresponding data in the file will be deleted.If the user picks from or adds to the list, I'd like to find the best way to populate the corresponding data elements on another form (i.e., in their respective text boxes). This will include the ability to edit/save from this other form too.
<?xml version="1.0" encoding="utf-8"?>
<Rows>
<Row>[code]......
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Feb 18, 2011
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[Code].....
MS has a patch for the OnListChanged event handler issue, even though it seems we have to pay to have access to it. This fix specifically addresses an error message when you press ESC to cancel adding a new row in .NET 2.0: [URL]
FIX: Error message when you try to press ESC to cancel adding a new row to a DataGridView control in the .NET Framework 2.0: "An unhandled exception of type 'System.InvalidOperationException' occurred in System.Windows.Forms.dll"
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Jun 21, 2010
I posted earlier this week about reading in data from a csv/txt file into an array. My data is huge, 100 columns and 12000+ rows. I would like to name variables by column and then plot these variables. After I read the data line by line and delimit the row, I'm not sure how to put each integer into it's own separate column, and then continue this for the next row and the next row, ect.
After some reading I would imagine the proper way to do this would be by creating a structure and then read the data into the structure, but there's no real starter example/tutorial out there that does this. I know some people will read this and get pissy, but you've got to realize I'm coming from Matlab and vb.net is a huge change for me.
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Mar 13, 2010
I am working on a program where I need a small database. I wanted to use XML to store the data, so I followed this tutorial:Everything there works fine. What I now want to do is figure out how to execute SQL statements against the imported data to do inserts and queries.I've searched and searched, but cannot seem to find relevant info. Every example I see needs a connection string, but that doesn't apply here as far as I can tell.
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Nov 26, 2011
How can I bulk copy a datagridview that has csv data imported, then export to SQL
Private Shared Sub CopyData(ByVal sourceTable As DataGridView, ByVal SQLDESTINATION As SqlConnection)
' column mappings example:
[Code].....
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