I am trying to create a datatable to be shown in a datagridview.. i have created a DataGridViewComboBoxColumn that has a data source and now i wanted to create a DataGridViewTextBoxColumn but i dont know how to make it take its data from a column in a table.. i did it with the comboboxcolumn but i coudnt do it with the textboxcolumn..
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I want to make 2 planning forms, one for persons and one for materials. The most ideal situation is when it can be in 1 form and switched by using an option field at the top.
- The information is coming from a SQL 2008 database.
- Vertical the persons or materials must be shown(dependent of the option field).
- Horizontal every day of the year must be shown, so the number of columns will be 365.
- At the crossing the number of hours must be shown.
- The form must be build as fast as possible.
I tried to create a datatable dynamicly and use a Datagridview. The advantage is the information, which must be shown, can easily be changed. The disadvantage is it is slow.What is the best method to do this in VB2008?
I want to create a datatable using he contents of a DataGridView.
View 9 RepliesI have a Datagridview collections embedded in several Tabpages of a TabControl. I want to use to control Button to import data to the datagridview. Data is different for different datagridview. I want to know which DataGridView is currently shown (on the top) when I click the control button so that I can send corresponding data to it. What shall I do?
[Code]...
i can't get the data to be shown in the datagridview
what am i doing wrong here? i think the problem starts in the ---- if then statement
Private stylist As String
Private treatments As String
Private klantnaam As String
Private Collindex As Integer
[Code]...
I have an application that uses DataGridView in two different locations. In one location, the DataGridView shows everything fine. In the other location, whenever the form containing the DataGridView is initially loaded, only about half of the visible portion of the DataGridView is actually drawn; through the rest of the DataGridView, the underlying windows graphics can be seen; if you scroll down through the rest of the data, you get a choppy view of what corresponds to the bottom row being scrolled upward through each scrolled row. The only ways to get the DataGridView to show the correct values are either to select a cell, forcing that particular cell to redraw; or to invalidate an area of the window, causing that area to redraw (which it does do correctly).
I've compared how each of these DataGridViews were set up: For the one that works fine, the DataGridView is statically bound to a BindingSource, which is statically bound to a DataSet; the one that has the draw problem is statically bound to a Binding Source that is dynamically bound to a DataTable during the creation of the form.
What could be causing my DataGridView to not display correctly?
I have a datagridview bound to a datatable setting its datasource property to the datatable. I would like to have a child form that contains a list of columns associated with the datatable that contains a checkbox that will allow the user to hide and show the columns ( I do not know the best control to use here) (I assume this is the easy part as All i need to do is loop through each of the datatable's columns to get the column name)
now I would like save these visible columns on some event like form_closing so that the next time the user opens the form up it will remember the settings
I have a MainForm which contain SecondaryForm as a control of the MainForm.SecondaryForm contains DataGridView which loads data from sql server and I add a collumn named SUM that SUMs all the values of the same row. This is provided within the LOAD event of the SecondaryForm.When SecondaryForm.Load events finishes, the program goes back to MainForm right after the line "SecondaryForm.Show" and here the values of the column SUM disappear.When i write those values runtime, they never disappear.
View 6 Repliesafter i drag the datagrid view from the data source windows the group of controls appear in my form does not include a binding navigator, i also dont see it in the component area.
but when i try the example from northwind database after i drag datagried view it already have a binding navigator. why my own project dont?
EDIT: im able to figure out about this 1st question, just a little bit of exploration , i just add the navigator control from the control toolbox. then set the binding source. ^^,
question 2: when the binding navigator is now available.
when the navigator is already now in the form i will set the visible property = FALSE.
i will make a control button that will serve as "Save and Addnewrecord" that will save the data (from the text box )and save it to the table and add new record read to accept new data.
I have the following code to resize the datagridview but the vertical and horizontal scroll bar are not shown when there are colunns and rows exceed the width and height of datagridview objects.Bascially the following code is similar to dock to the botton, the only difference is docking to the botton change the Y position of datagridview and fill the botton section whereas my code fix the Y position of datagirdview and fill the bottom.[code]I have tried with the dg.ScrollBars = ScrollBars.Both but it it is not working as well..May i know how to get both scroll bars working.
View 5 Replieshow to create a list shown in following image using vb 2005 ?i want the following list (contents doesn't matters) to be appeared when i click the button.
View 2 RepliesAt the moment I have a DataGridView (bindet to a DataTable) and some labels. If DataGridView's event SelectionChanged occurs,the labels should be filled with the information of the selected row -> No problems.But if I sort the DataGridView and click on a row, the informations in the labels are wrong.
Event:
Private Sub DGVMain_SelectionChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles DGVMain.SelectionChanged
If DGVMain.SelectedRows.Count > 0 AndAlso Not Me.DGVMain Is Nothing Then[code].....
My application must display some data in Datagridview (status of COM ports communication) and i Used .mdb databases before for faster search and Datagridview update. How i understand Datagridview is importing data from DataTable and data in DataTable is imported from .mdb file, so i decided to make shortcut - stop to using .mdb file (data must be erased every time application start and it is useless make .mdb file and erase it every time, becouse it is increasing even when drop is used) and using only DataTable..
I want to row in Datagridview change it color to red when it's Collumn(6).text countains %error% string..
When Error in COM port is starting, i can fast find row in DataTable for that port and write information that Error accured for that port and DataGridview automatically updates:
Dim RRow as () DataRow
RRow = ds.Select("Port = 'COM3')
RRow(0).Item(6) = "Error Opening COM3"
I am trying to create a datatable in VB.NET, but when I output a row from this table it shows: "System.Data.DataRow".I have compared my code to several websites and it seems correct. However if I instead Response.Write these values they display correctly.
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I just want to know on how will I add a Checkbox in each row of my datagridview. First I used a datatable to get all the values from my database and then pass it all to the datagridview. What I want to happen is at the first column of my datagridview there is the checkbox.[code]
View 4 Repliesi build a datatable in DataGridView. When form open datagridview point to current row is first row
when i call this code :
MsgBox(dgvName.CurrentRow.Cells("drID").Value)
I have a datatable dimensioned as new.I add the columns that I need (during the form's load) I have a datagridview as on object on my form and set the datatable as its source.The table is loaded with values and they display properly.The User closes the form and returns to the 'Main' form. At this point no problems, everything is working great. NOW...The user re-opens the form containing the datagridview It has the values from the previous time it was open, plus the new values ! I have tried several things so when the user goes back into the form it only has the new values, but it always keeps the previous values and appends the new values to it. I have attempted to clear it by adding a line: datatable.rows.clear(); I have activily gone through the datagridview one row at a time and use a statement to clear the cells;
For Each DGVRow As DataGridViewRow In Me.DataGridViewErrorList.Rows
DGVRow.Cells.Clear()
Next
so far no luck.
I'm selecting value from my database, passing it to datatable then giving DataGridView.DataSource value of datatable.The thing is that in those rows i'm also selecting some dates and problem is that my default date in database is '1900-01-01 00:00:00' because i use "smalldatetime". And what i want is this...when I find default value in database i want to show it like an empty string, like i said...because date is in smalldatetime format i can't do this in SQL query so i wonder how can I change this in DataTable or even better in DataGridView...of course, in code?
View 4 RepliesI managed to Convert a Datagridview to Datatable, Now problem is the programmatically addded Columns Seem to end up at the end of the of the initial table layout[code]...
View 2 RepliesI am trying tomodify the following code from a datagrid to a datagridview but I'm not sure about how to do the conversion. The problem lies with theDataGrid.TableStyles.A dgv does not have that property.
Function
GetColumnHeadingText(ByVal
Column As
[code].....
I developed a windows forms app, using VisualBasic in VS 2010. In my form, first I declared a variable as DataTable (Dim VarTable as New DataTable).
Second, changed the DataSource property of my DataGridView (DataGridView1.Datasource=VarTable)
Third, I filled the VarTable in this way: using a resulset from SqlDataReader, i added row by row.
Dim Result As SqlDataReader=CommandSQL.ExecuteReader
Do While Result.Read()
Dim RowToAdd As DataRow
RowToAdd=VarTable.NewRow()
RowToAdd("Code")=Result("Code")
RowToAdd("Name")=Result("Name")
VarTable.Rows.Add(RowToAdd)
Loop
Fourth, after the user changed data in datagridview, I saved the data back to SQL, cleared VarTable (VarTable.Rows.Clear()), and back to top of form to accept a new code. But here, problems begin. When I execute again the whole code described, the datagridview dont show the entire rows, and sometimes crashed with different errors. Solution? Dont fill VarTable row by row. Use VarTable.Load(Result) to populate the VarTable. I don't know why now works, But just I wanted to share this information.
How to copy all datagridview data into a datatable ?
View 1 RepliesI have a BackGroundWorker that produces a DataTable which is then bound to a DataGridView.
I want to have selected rows of the DGV colored based on the value of a column within the DataGrid (1 if coloured)
How can I set the row color while populating the datatable? Or do I have to set the color on the DataGridView after binding it to the datagrid?
me how to bind the dataTable to dataGridView??
View 5 RepliesIf I have a datagridview's datasource set as some datatable, is there a quick and easy way to reflect the changes in the datatable that have been made in the datagridview?
When I sort my datagridview, the rows in the datagridview and the datatable no longer match up.I know I can catch when the dgv is sorted and for-loop through the dgv and send it to the datatable, but I was hoping there was a save/update method or some such thing.
I am using the DataGridView for editing data, but when I go to access the DataTable bindings there are no data. I used to bind the following
'Data Loading
dtDettaglio = lettura_art
bsDettaglio = New BindingSource(dtDettaglio, Nothing)
dgDettagli.DataSource = bsDettaglio
dgDettagli.AutoGenerateColumns = False
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I have a datatable with three columns
Id name value value1
I want to create a string from this datatable so that each row in datatable will create two rows name will become one row value 1 will become another row
If name and value1 are similar then include value 1 only otherwise include both name and value1 (this is done)
If name of one row is similar to name in any other row, then add following text infront of both duplicate rows in string
Id is similar to Id
This is what I have written so far:
Public Function GetGazetteer(dataTable As DataTable) As String
Dim processedData = New List(Of String)
Dim rowData = String.Empty[code]....
So I'm sure this sample code exists somewhere, but at this point I just need some guidance. What I am trying to do is import all of the data from a CSV I have (it's about 100 columns of data that are numbers, not strings, and have headers) and create a DataTable so that I can plot to a 3rd party chart control called Zedgraph. The problem is that when I plot columns from the DataTable that is created by the following code, it simply plots a diagonal line of the points count (in other words, if I create a curve from a column containing 400 data points, it plots a line from 0,0 to 400,400, instead of plotting the actual data). What I think I have finally figured out is that I'm importing the data as String, rather than Double or whatever other number type I could use. The problem is that I cannot seem to get any OLEDB connection to actually fill my dataset, so I have had to stick with this code for now. FYI, I am using Visual Basic Express 2010 and the file is a CSV created from Excel 2007. [code]...
View 2 RepliesIs there a way to add columns in a datatable to the intellisense of the datatable? Is there a way to display the columns of a datatable in a datagridview?
View 5 Repliesi am created Window based application .
i want to bind datagridview source to datatable .
whenever i write
Dim dt As datatable
dt = dgvtest.datasource
Error occur ?
