DB/Reporting :: Programatically Change Data In Grid?
Jul 15, 2010
If I wanted to change the value of a column for every row in a datagridview, what is the best way to do it? I have encountered an issue when the datagridview is bound to a filtered DataView and need to know what I am doing wrong. The code I would normally use is
Code: For Each r As DataGridViewRow In DataGridView1.Rows
'don't touch the blank line, it is pointless and will error out
If r.IsNewRow = False Then
'set the current line with the current ID.
[Code]...
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Nov 26, 2008
I have an Access table that contains "Customer Number".
I have an ODBC dataset (iSeries IBM Client Access, or AS/400 data) with a customer table in it. I want to link the customer numbers in the access table to the ODBC table so I can show the customer number from the access table and the customer name, city, and state from the ODBC table.
I want to display this information in a grid. I also want to be able to add records to the grid (which adds them to the access table). What is the best way to get started doing this? I am using VB2005. I could use MS Access and have it done in about 2 minutes, but I want to take the plunge and learn VB2005.
But this VB2005 and .net thing seems like they re-wrote the book on programming and I cant seem to get a grasp on it. I have tried several projects like this in hopes of learning, but ended up abandoning them in frustration.
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Jan 8, 2011
Masters of the visual basic arts, I, a lowly noob, would just like to ask for your wisdom (and mercy). For my program needs to determine if the data grid view has any content because if that certain datagridview doesn't contain anything, then I would disable a couple of functions for the program.
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Nov 11, 2009
Does anyone know how to cancel a row change in a data grid? What I want is to allow the user to modify a row in a grid. When they try to leave a row after changing it, then prompt them to save the changes before moving to the new row. So far, the rowleave event is working to prompt them to save or not. But I'd like to give them the option to cancel...which should leave them on the original row. The rowleave event, nor any other similar event, appears to have the abiity to cancel the move.
I thought about remembering the row number and just putting it back on that row...but it seems like there probably should be a better way to cancel the row change.
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Dec 26, 2008
need to have a summation field in each row of a grid in visual basic. Each row needs to calculate the remaining quantity of its row and all other rows beneath it. Thus the subtotal field in the 1st row would equal the sum of the shown quantity field for the entire grid.The next row would include its value and all those beneath it. Its subtotal value would be less than the subtotal of the row above it (by the quantity value of the 1st row). My code for the grid is very simple I just can't figure out how to add this iteration.
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Apr 20, 2012
I want to change the back color of a row in a data grid view while the program is running.
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Feb 15, 2012
How could I change the column header of the Data Grid to center or right but not left as default? [We are talking 'bout Data Grid here, recently I always receive answers for Data Grid View instead :( ] I just want to re-align the header only, not the whole column. There's another topic discussed bout this already but it's not working in my case. Here is my code:
Public Class Form1
Private Sub DataGrid1_Paint(ByVal sender As Object, ByVal e As System.Windows.Forms.PaintEventArgs) Handles DataGrid1.Paint
[Code].....
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Jun 9, 2009
How i can change data grid view column type runtime. like i want to make a coloumn checkbox but runtime.
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Jul 13, 2010
I have made several posts on here lately regarding master/detail or parent/child data setups but no one has been able to help. It seems like a subject people don't like to tackle BUT I really need help.
I'm having a real hard with the DataView.RowFilter functionality and it is driving me insane.
For the most part, I have the basic master/detail functionality working. When you select a record in the first grid, it shows the correct data in the second grid. When you enter a record in the first grid, you can enter related data in the second grid. I accomplish this by using a dataview and row filter bound to the 2nd grid. When you change the record in the first grid, the rowfilter for the 2nd grid is restated and reapplied.
The problem arises when I overwrite the primary field value in the first grid and the detail records become orphaned. You would think all I have to do is change the ID in the 2nd grid to match the new ID in the 1st grid but this is where I am having problems. I wrote a loop to change the ID of each record currently loaded in the 2nd grid to match the newly changed ID in the first grid. The code is here:
Code:
Dim I As Integer
For I = AuthorizationGroupsDGV.Rows.Count - 2 To 0 Step -1
AuthorizationGroupsDGV.Rows(I).Cells(0).Value = StrEmployeeID
Next
I have used this code before and it works great. It has to step backwards through the grid because when the ID's are changed, they no longer match the RowFilter criteria and they disappear from the grid. They still exist in the dataset. The problem is, while the code "works" the intended effect does not. Some of the records completely disappear from the dataset and do not reload when I restate the row filter against the new ID number.
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Dec 11, 2010
I'll try to make this simple, using VB.Net on Windows Vista:How do you change key bindings programatically?I'm thinking it has to do with the registry so if it does just give me the registry key names(i know how to change the registry already)If it helps, the reason I want to do this is to change the Windows media center button so that it opens my program rather than WMC.
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Nov 20, 2009
I have a TabControl with 4 TabPages ( 0, 1, 2 & 3 ). As the user changes from Tab to Tab, a validation procedure determines if the selections in the curent tab are complete. I'm using the 'Selecting' event to check for the validation and if not valid I'm setting e.cancel to true.All of this works quite well. My problem is that in the validation code, checking tab(1) data, I would like to offer the user the ability to choose to change data in tab(0).The 'Selecting' event enables me to cancel the change to tab(2) from tab(1) but will not allow me to set the selectedindex to 0
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Dec 31, 2009
How to change the Data Gridview Button Back Color and Fore Color Based on Condition in Vb.net2005. i'm Attaching the gif toooo
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Jan 6, 2011
I am struggling with changing the Page Orientation of a WORD document I am creating programatically using VB.NET 2005.I need to change the orientation from Portrait to Landscape after the first page of the WORD document is created.I create a WORD document (2007) successfully and then begin to populate the WORD document with report information (taken from reading a text file and writing some if it to the WORD document)...I am using COM Microsoft WORD 12.0 Object Library....After the first page, the document needs to be changed from a PORTRAIT orientation to LANDSCAPE orientation.Since my application is generating several WORD documents from this one text file, it needs to be done programatically.provide assistance with small example of (writing text to word...page break...change orientation to landscape)?
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Jan 14, 2010
This is a VB .NET application where we are showing the output of a SQL statement in a Datagrid view. using .NET 2005.We need to get the seperators of the headers on the grid control to be the same colors as the GridColor on the form. See the picture below:We've tried looking through all of the properties of the DataGridView control, and found some interesting things that looked promising such as the DataGridViewAdvancedHeaderStyle, and DataGridViewHeaderBorderStyle, but none of it seems to allow you to change the colors on it.Does anyone know how to do this without remaking the entire thing with a GDI+ control?
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Jan 8, 2012
Is there a way to automatically put a Data Grid Row Column in a data Grid?[code]...
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Oct 13, 2011
I have the below code that i am trying to have two datagrids with a grid splityter in the middle. The split seems to be working fine but the issue i am having is when I populate the datagrid it is growing in height and changing the splitter instead of leaving the height alone and adding scroll bars.
What simple thing am I overlooking?
<Grid x:Name="gdHistory" Grid.Column="0" Grid.Row="2" >
<Grid.RowDefinitions>
[code].....
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Mar 10, 2010
I have a problem with importing an excel into a data grid.
Here is my code:
Try
Dim _Obj As New ExcelConnection.ExcelConnection
_Obj.ImportAttendence("c:Info_pc.xls", DataGrid1)
Catch ex As Exception
End Try
In the excel i have numers and text and "Service Pack", "Processor Speed" and "Numar procesoare(Number of processors)" and the values for these are numers. in the data grid when i import the excel those values doesn't appear, i receive the value "null".
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May 9, 2012
I have 1 datagridview and i want to transfer all records to another datagridview, how can i possibly do that. Newbie here. This is my code in transferring 1 record to another datagridview to another one.
[Code]...
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Dec 27, 2009
I have successfully added textboxes to a form at runtime. I have also succesfully added an event handler to these same textboxes. What I'm having trouble understanding is how to refer to these textboxes programmatically after they have been added. Specifically, how do I;
1) Retrieve user data entered in those textboxes without an event handler
2) Find a specific one of those textboxex later (is looping thru all controls of type "textbox" the only way)?
purpose of find is so that I can set the value of the corresponding textbox programatically, based on some criteria Here is the code (all within in a for loop, where intvararycount is incrementing to a set limit) I have used to add the Textboxes to a Panel on a Form;
[Code]...
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Oct 28, 2011
I have a datagrid where I am programatically adding a linkbutton on ItemDataBound.
[Code]....
The linkbutton is adding to the grid cells correctly, but when you the click event is not firing.
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May 5, 2009
I wanted to change the style, width and color of the grid lines for my X/Y scatter graph.Basically, I want to distinguish the minor grid lines and the major grid lines.
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Jan 25, 2012
i'm building an application using ms chart control on VB 2010. I want my chart look something like that:url...is it possible to achieve similar results in VB?
1) is it possible to remove that black grid of vb chart, or just remove half of it (like in that example)?
2)is it possible to change the color of that grid?
3)is it possible to rotate the axis? for example Y goes from top to bottom, X goes from left to right?
4) is it possible to style every point of chart with squares or dots? (like in example)
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Jul 15, 2009
how to cambine 2 data grid view into 1 data grid view
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Jul 3, 2011
How to change vb .net datagridview row color based on grid checkbox value. Having bound DataGridView. BindingSource as data source. called DGV. I m using this code under cell_formatting event
[Code]...
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Oct 14, 2010
I just want to display data in a DataGridView (from SQL - already made the connection) based on what is selected in a ComboBox (data that is also coming from SQL). The 2 are separete on the form. I am using VB 2010.
This doesn't work for me:
objCommand2.CommandText = "SELECT ProductID, Name, Color, Size, ListPrice FROM SalesLT.Product WHERE ProductCategoryID = " & cbCategory.SelectedValue
[code].....
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Nov 11, 2010
The control comes up blank??Imports System.Data Imports System.Data.OleDb Public Class Form1
[Code]...
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May 18, 2010
I'm trying to create a simple Data Grid that will automatically save changes. So far I have a data grid connected to a MS Access 2007 Database that reads the data. I can create new fields in the Data Grid, but I need to program to save the data automatically to the database on update (or on close).
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Sep 28, 2011
I have an excel file that I would like to load into my form and display there.
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Oct 6, 2011
how to display data in grid view using code that you can edit, update and delete the data...do i need to have a stored proc in this?
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May 15, 2011
Are there any good free alternatives to DevExpress data grids (WinForms)?I am looking for WinForms Data Grid and Data Editor Controls.
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