Any 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).
Still experimenting with datagrids and ran into another problem...I'd like to sort a column displayed in a datagrid bound to an Access table programmatically. The field is a date ime type and is sorted in descending order in Access. I can manually sort it at run time but i'd like to know how to sort it with code.
View 1 RepliesIt 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]....
I 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.
What I am trying to do basically is open an access query in a datagrid view and then be able to make changes to the datagrid and then save it back to the database.When I try to save:
Me.BindingSource.EndEdit()
Me.TableAdapter.Update(DataSet)
It says that update is not a member of the tableadapter... Why is that?
I have a datagrid which I am using LINQ to fill, I then add some custom columns and fill them in programmatically - if the users clicks on the column header to re-sort, all the data in the added columns disappears. I am obviously missing something very basic here but can't seem to see the forest for the trees. I also have a couple of other questions about how I am doing things:
[Code]...
VB GridView control will not allow code in the vb code file to access a data column that has its visible property set to false. When it is set to true, the data column can be accessed with no problem. Any suggestions as to how to correct this? I have looked through the documentation, text books, and I have not found anything that gave me any clue as to what the problem could be. I thought that the property was just applied to the column, not that it would remove the column from being accessible.
[Code]...
I'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.
I 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 Replieswhat is the use of adding new columns to datagrid view? [code]if we can't add / update these columns to databse ?
View 1 RepliesI 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]
I 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)
I 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 Repliesi 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 Repliesi 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]...
this 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].....
Using SQL Express 2008, I have tables with the following columns[code]...
View 7 RepliesIs 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 Repliesis it possible to have a datagridView in which each column can have diff no of rows in it?
View 1 RepliesI'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"
well can you get the average sum of datagrid column ?
View 7 RepliesCan we make a particular column in DataGrid to behave like text box AutoComplete mode?In the GUI, am planning that the user will select a ProductName and will enter the details in the datagrid.The problem I am facing is am not able to set datagrid column to AutoComplete.If I use Textbox or Combobox for the purpose, am not able to enter the selected content into the datagrid because the datagrid is binded to a dataset.
View 6 RepliesHow to assign value from a listbox into a column of a datagrid?
When user press Enter by placing the cursor into a particular column, it will display a listbox holding data values.
Now i need to assign the value that i click in the listbox to the datagrid column. how could i achieve this?
In my form I have several datagrids.
View 2 RepliesI'm pulling the data from a database (via dataset) and presenting in a Datagridview.
I need to have a column to display the total of �amount� column.
How can I do this?
This is not for ASP.NET but for VB.NET 2008.
How to take column sum at last row of datagrid view.
View 1 Replieshow do I set a column of a datagrid so that it will only accept numbers? I have this column labeled "Grade" which of course, should not accept letters. I have done setting its Format property but it is not working.
View 3 RepliesI have a datagrid with 4 columns for price... I want users to enter only numeric values. How is it possible
View 3 RepliesI'm pulling data from a database (via dataset) and presenting in a Datagridview.
And i need to have a column to display the total of amount column.
I have a datagrid and I have imported it to my project under vb.net language, and the database is MS access any way in this datagrid one table call "Employees" ID - Name - Nationality - Job title and what I want is when I write the ID number of the Employee, all the other details automatically comes upon to his ID number.
View 1 Replies