.net - Add A Datagrid Column Dynamically On Selectedindexedchanged?
Jul 27, 2009How should I add a datagrid column dynamically on selectedindexedchanged?
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Dynamic DataGrid - Dynamically "transform" DataGrid To Display The Selected Search Template
May 23, 2011I have a search form on that will be pulling search template queries from a table in the underlying (an Access db on a share). The search form has a calendar control for filtering by date range, a listbox containing the names of the search templates, a second listbox which lists the fields in the selected template, and then some controls which show/hide themselves depending on which field is selected so that the user can pick a field and enter it's unique criteria in the appropriate control for filtering. Below these controls is a DataGrid, which will obviously display the results.
The problem is how to dynamically "transform" this DataGrid to display the selected search template. These templates do not represent tables in the underlying; rather they represent preconstructed SQL queries (stored in a table) which are essentially SELECT queries with joins and no WHERE clause (so they are the results of multiple tables joined together by their keys).
To be honest, I'm having trouble even generating the LINQ queries to represent these template dynamically, but that's not as important, since I can manually translate the SQL queries into LINQ. This is definitely not the preferred method, as the whole point of putting these templates in a table, rather than code, was to allow for future additions without rebuilding/redistributing the application interface.
Datagridview - Sort Datagrid View Column With Numbers And Texts On Column Header Click?
Feb 13, 2012It seems that on clicking datagridview column header, the column will be automatically sorted based on the column type. I have a column showing some numbers. If column type is string, it sorts "1","20","3" into "1","20","3". If column type is double, it sorts into "1","3","20" which is the result that I want. However, there might be some erros in the numbers and error messages(text) will show in the cell instead of numbers. So I cannot set the column type as double. I want to ignore these error messages and sort all the numbers. How can I do this?
Also, I need to add some background colors to different rows in datagridview. So in the column header click event, I call the bkgColor Sub to achieve this. My question is that how can I override the sorting method in this event?
Private Sub DataGridView1_ColumnHeaderMouseClick(sender As Object, e As System.Windows.Forms.DataGridViewCellMouseEventArgs) Handles DataGridView1.ColumnHeaderMouseClick
Try
[code]....
Datagrid Bound Column Properties Column Property Will Not Change
Aug 4, 2009I have a datagrid that I am unable to change the width setting, it always reverts back to the original setting.
To change this setting:
1. select the datagrid view tasks
2. Edit columns bound column properties
3. Select Width property
4. Width property will always revert back to the original setting.
I have check the properties settings without any luck.
Dynamically Binding To Datagrid
May 3, 2012I'm trying to bind a dataset to a datagrid. I've found many examples online... all look similar to below. My problem is that the bind seems to work, but nothing shows on the datagrid. It's blank. Both rowcounts in the message boxes display the correct number of rows for both the dataset and datagrid. Does something need to be initialized in the datagrid properties?
[Code]....
Saving Datagrid Changes Dynamically
May 23, 2011i have been using to save any changes to the datagrid to the database which had the name statically assigned like this [code]I then decided to allow the vb program to access any .mdb file dynamically by using and open file dialog which all works fine except for my save button which again has all of the field name set statically like Record,[code]can anyone suggest a replacement for the code that would solve my problem i have also attached a screenshot with the original database or statically defined database opened can anyone suggest code that will do what the above code does dynamically so it can open many database files.
View 14 RepliesDynamically Refresh Datagrid View?
Apr 20, 2010Let's say that I have a windows application in which I have a form with some controls that are bound to a dataset. A DataAdapter or TableAdapter fills the dataset on form load with a large number of records and user can navigate and change the details for each record. This works fine ... but this app runs on a network. And let's say meanwhile you've loaded your form and you're navigating through it (for half an hour let's say whithout saving changes or reloading the dataset) another user modifes the data and updates the database but as long as you have your application running you can't see those changes !!! what is the method to know whether the database has been updated or how to refresh the datagrid view with the new changes updated by other users while the application is running?
code is
Imports
System.Data.OleDb
Public
[Code]....
Add A Column To A Gridview Dynamically?
Mar 21, 2010I have a gridview which is created dynamically by adding columns and rows from a database.this is the code which is used to fill the gridview
sqlQuery = "select distinct ID,FullName,Address,[Home Tel],[mobile tel],[work tel],Email,[Birth date],Rate,Notice,Created,Modified,[last cv],Deleted,[q comments],[last typed],Recruiter from [dbo].[vItrisRepository] where email like '%" & email.Text & "%'"
adapter1 =[code]....
now i wanted to add extra column in to the gridview with a name skills in the existing gridview .is this possible?
Add Dynamically Combobox Column On Datagridview?
Jan 13, 2012I have an application with a DGV which is populated like example bellow:
ConPubs = New OleDb.OleDbConnection
ConPubs.ConnectionString = "Provider=sqloledb;Data Source=" & dataSource & _
";Initial Catalog=" & initialCatalog & _
[code]....
What I have to do is to change
Me.dataGridView_ctrlUsr.AutoGenerateColumns = False
in order to create my own type of columns. USERNAME to have type ComboBox NAME to be type normal like it comes from dataset But I don't know how to create a a column that is combobox and another one that is normal like it comes from dataset.
Dynamically Make Image Invisible In Datagrid Without Change The Size Of The Cell
Aug 22, 2009I have a datagrid where the first column is for image button for expand purpose. The visibility of the image depends on some conditions row by row. I am trying to handle this in ItemDataBound event, and using e.item.cell(0).findcontrol("imageButton").visible = false. The first cell of this row therefore disappears even that the size is specified in the ItemStyle tag.
View 3 RepliesC# - Dynamically Populating Column Headers In A Gridview?
Mar 6, 2012I have a vb.net website with a gridview that currently has exam questions displaying vertically in each row like this:
Name question answer
-----------------------
Joe question1 answer1
Joe question2 answer2
[code]....
But I would like to change it, so that each question is a header, like this:
Name question1 question2 question3
----------------------------------
Joe answer1 answer2 answer3
Jill answer1 answer2 answer3
This makes it more readable since each user is only listed once.I would like to stick with a gridview instead of rewriting all my code.I am actually binding my data to the gridview via some other programmers class. I am using LINQ like this:
Return (From entry In report.FetchAllEntries()
Select questionID = entry.Question.QuestionID,
userID = entry.Session.User.ID,
[code]....
Moving Picture To Row And Column Dynamically Created?
May 19, 2009ok this generates the boxes. I have another set of pictureboxes and i was wondering how i would be able to move those pictureboxes to the pictureboxes that were generated based on the row,column, letters, direction(left,right,horizontal etc.) they pick
For i = 1 To 15
For j = 1 To 15
buttonnum = (j - 1) * 15 + i
[Code]....
Asp.net - Format Dynamically Generated Column Headers Of GridView?
Jun 27, 2012I have created a Stored Procedure in SQL which produces a pivot table. I've successfully created a GridView in ASP.NET to display this data.
However, some of my column headings are dynamically generated from the data (AutoGenerateColumns=True), and those column headings are just dates, so they will look different almost every time the table is generated.
This all works fine, except that the date format of the column headings is wrong. I know I could change the way SQL produces the dates in its output, but I don't want to do it that way. I want to control it from the web page.
I didn't think this would be difficult - I thought I could just do something along the lines of finding the cells in the header row and changing the datastringformat. The problem is that whether I put my code in the GridView's DataBound or RowDataBound event, the cells in the header row seem to be empty, so I can't reformat them. It's as if the headers get populate some time AFTER the DataBound event, but I don't know when or how to trap it.
VS 2008 Dynamically Creating And Adding A ComboBox To A Specified Column In DGV?
Mar 19, 2012I am dynamically creating and adding a ComboBox to a specified column in DGV. I also set a DataSource, DisplayMember and ValueMember for the created ComboBox. Somewhere else in my program, I select a number ( let's say 5 ) and based on that number I want to change the SelectedIndex of the current ComboBoxColumn ( I actually loop through the Columns collection ).I tried something like this in a event handler I created:
vb.net
Private Sub combobox_validated(ByVal sender As Object, ByVal e As System.EventArgs)
Dim combobox As System.Windows.Forms.ComboBox = sender
Dim colIndex As Integer = combobox.Tag
[code]....
You will notice here, that I'm not actually trying to change the .SelectedIndex property, but the Value of the current cell.How do I reference the actual ComboBox?
Dynamically Increate The Listbox Column Width With Form Resizes?
Jan 8, 2010I want the ability to auto stretch the listview control column when the form gets resized in vb.net 2008 These are the properties I am mentioning for the ListView now :
ListView1.View = View.Details
'ListView1.GridLines = True
ListView1.FullRowSelect = True
[code]....
I am increasing the width of control and not columns as I wanted. I am unable to find anything else than width.
Update Table, Where Column Name Is Selected Dynamically - DropDown.SelectedValue, C#, .NET?
Mar 10, 2010I want to Update Column of a Table where ColumnName will be DropDown.SelectedValue.Example: A set of RECORDS will be displayed from a Customer Table where CUstNo ='1234' and City= 'Chicago' and Grade ='B' Once displayed I want to Update the grade to 'A' of all those customers from the above criteria. In My case I have like 100 Columns, so in where Clause Column Names will be selected from a DaropDown.In My Query, Update Customer SET ColumnName= 'some value' where ColumnName ='ActualValue'So how can I pass the ColumnName which is Dropdown Selected Value. I believe I can't give as Update Customer SET DropDown.SelectedValue = 'some value' where DropDown.SelectedValue ='ActualValue'
View 1 RepliesGet The Value Of A Column From A Datagrid?
Jun 7, 2011I'd like to get the value of a column from a datagrid and insert that to a table. I get an error "Object reference not set to an instance of an object."
Here's my code:
Imports System.Data.SqlClient
Imports System.Data
Public Class Class1
[Code]....
The thing is -- when I look at table amtdue, everything is actually saved there. I just don't understand why I'm getting the error, and so I can't proceed with what I have to do after clicking the btnaddtocart button.
How To Add Sum Column In DataGrid
May 16, 2011I need to add some columns in the DataGrid view at run time. I have nearly 12 columns in the DataGrid and I need to add 5 columns fully from top to bottom and show the sum result at last column. How can I do that?
View 1 RepliesAdd Column To Datagrid View
Aug 18, 2010what is the use of adding new columns to datagrid view? [code]if we can't add / update these columns to databse ?
View 1 RepliesAdd Values That Are In A Datagrid Column?
Mar 17, 2010I have a database and a dataset as the image shows in the link, how would i add the values of the colums "amount1" and "amount2" for every row and entry as the user make entries to be automatically displayed in the "total" column. Meaning that every time values are entered in those amount columns, they will be added and the total displayed in the "Total" column.
[URL]
Change First Column Datagrid Value?
Feb 25, 2009I want to change datagrid first colomn value with some . or $ BUT when user clicks on first colomn then we need its actual value
Using : vb.net (Desktop development)
Column Width On A Datagrid?
Aug 3, 2010I am retrieving data from a table and displaying it in a datagrid, how can I make the columnwidth variable depending on the size of the text field being returned and do it in the code ?
View 3 RepliesDataGrid Access By Column And Row
Jun 21, 2010Any way to access a specific column and row of a datagrid generated by a sql-query in visual basic. The datagrid looks, simplified, like this:
Column1 Column2
Data1 Data2
Now I would need a function, that reads data2 out in visual basic (asp.net web).
Datagrid Checkbox Column .net?
Jun 5, 2011i want to ask about the check/uncheck the checkbox in a column in datagrid.if all row in the checkbox column is not selected, what is the code is.because i want the msgbox appear if the user not check any row.
View 17 RepliesDatagrid Column Coding If Else ?
Aug 9, 2011i got a datagrid connected to sql...my problem is i have two columns which is grade and evaluation i need to do is.. if grade has a value of 1-3 print passed and 4 above will print failed a string will be printed in evaluation column here is my sample code of mine.. which didnt work..
[code]...
Datagrid Column Style?
Mar 23, 2009this is my code to format column style at datagrid:
Private Sub frmCustomer_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
Dim sql As String = "select cust_id,cust_name From inv_t_Customers order by cust_id"
[code].....
DataGrid Not Displaying Column
Jun 20, 2010Using SQL Express 2008, I have tables with the following columns[code]...
View 7 RepliesDataGrid Sorting By One Column Then Another
Mar 13, 2012Is there a way to sort a datagrid by one coloumn and then by another? For example by column 1 then by column 2. I have managed to sort it by a single column, however this doesnt give consistent results.
View 12 RepliesDatagrid With Different No Of Rows In Each Column?
Sep 25, 2009is it possible to have a datagridView in which each column can have diff no of rows in it?
View 1 RepliesFormatting A Datagrid Column?
Oct 23, 2009I'm having some trouble to formatt a datagrid column. At the present time the data column is displaying "o1-13-2009" I would like it to display JAN-13-2009" Here is my code
[code] Dim notecolumn3 As DataGridViewColumn = Me.CustomerNoteGrid.Columns(3)
notecolumn3.Width = 65
notecolumn3.DefaultCellStyle.Format = "MMM-dd-yy"