I have a datagridview that has 1 combobox column (it will eventually have between 1 and 3 more) but I can't find anything anywhere on how to add rows to this column. I create the columns:
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I am working with an Unbound DataGridView. I would like to vary the contents of a second combobox based on what is selected in the first. I have code to add the columns and populate the first combobox, but I can't figure out how to do the second one since it can (and usually will) have a different list for each row AND the list must change when the selection in the first is changed.
View 1 RepliesI am adding two unbound calculated columns to datagridview. The columns show up but does not have the calculated data.
Private Sub Top10ToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) _
Handles Top10ToolStripMenuItem.Click
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I have an unbound datagridview with a whole bunch of columns.I need to sort based on 4 columns, the first three are simple strings, the fouth is a date string (which in itself presents a problem, since it wants to sort lexically but I need them in date order).
View 3 RepliesHow to delete all rows from unbound datagridview ?
View 1 RepliesDataGridView1 is bound to a sql table. Cells(0) and (1) come from that table. Cells(2) and (3) are calculated. While debugging the code, the calculations and lookup look fine, but the results will not display in the columns. Here is the code:
Dim SeatsUsed As Integer = 0
For Each r As DataGridViewRow In DataGridView1.Rows
Try
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I have a datagridview that is populated from a selected CSV file I have purposely done this by NOT using bindings on the control.
Here is what i need to do:Pass the cell's to an API called through HTTP.
Headers for datagridview are:
HEADER1
HEADER2
HEADER3
how the http should look:[URL]I need to loop through every row in the datagridview and apply this process to each row.
I have common sub to save data from data table to database like this ad.Update(tb) It works fine, but problem comes when i populate Datagridview using a joined query which takes values from more than six tables, for example
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I'm populating the datagridview at runtime based on user input. The issue I'm having is that the the combobox is displaying blank. The item I need is in the dropdown (I've added it), but I can't get it selected by default. I've tried the display member but that's not working.
View 1 RepliesI just spent over an hour looking up on the internet how to fill a combobox for each row in a datagridview that is unbound. I am adding the rows manually by code. The columns are already there and one of them is set to a combobox.
how to add two items to the combobox? Each row will have the same items available in the combobox.
I'd like to copy some rows of data from a data-bound datagridview to a different datagridview.I thought adding a row would just be like this: [code]The trouble is that, instead of copying all the data from the row and putting it in the correct cells in the other datagridview, it seems to be taking the whole row object and putting it in the first cell, so the first cell contains this: [code]And the other rows are empty. How do I make rows copy properly?
View 3 RepliesI have the following data structure in a data base.
Table File
- File_ID (PK)
- File_Name
I want to change the row color of every row in my DataGridView where a particular column value = "RBF3". I am currently using the DataBindingComplete event which seems to work fine, but it fires every time I change a cells value. I'd like for this bit of code to only fire when the datagridview is first displayed, sorted, or filtered. Is this possible?
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I have a datagirdview which I need to process.. I have more than 50000 rows and 200 columns in it. DataGridView accepts columnindex and rowindex only in the form of integer. Is there any way in which I can use long instead of integer.
View 2 RepliesSo i have a datagridview with two combos, when the form it's created i fill the first one with all the MainValues, and the second one with all possible values for the MainValues (called SecondValues) (1..N).Now my issue, when the user selects one value from the first combo i want to fill the second combo with all values related to the selected MainValue, i can do this for example by filling the datatable again with a parameter that filters the data, but if the previous rows have different main values, the dgv throws errors because it doesn't find the binded ones in the new filtered datatable.
How can i handle this? One datatable for each line?! Other thing, i'm using the SelectionChangeCommited event for handling the values change (in theEditingControlShowing), but if the user uses the keyboard to select the values the event doesn't behave in the same way or the way that i need. The values in the combo are numeric values (1001,1020,2010,3010), when the user select one of the values, i need to fill another cell in the same row with the number selected plus some string, example combo:1001 cell:1001XPTO. So if the user presses 1 in the keyboard the combobox selects the 1001 and fills the cell with 1001XPTO, but if i keep pressing the keyboard to select the 1020, by pressing 0 and 2, i get the 1020 selected in the combo, but the cell remains with the 1001XPTO.
The user picks x amount of scenarios from the combobox, and x amount of columns appear in the datagridview. If the user changes the number of columns from x amount to y amount, the columns should be added/removed respectively but currently when y amount is chosen x amount of columns are in the datagridview.
I'm not sure how to do this, I've tried using an IF statement under the .SelectedIndexChanged event but the code adds columns until it reaches as high as it can go, then pulls an error saying too many columns.
I have a form with :
1. 1 Combobox with User1, User2, User3.....User10
2. 1 DataGridView with one column in Combobox columnstyle (with User1,User2,User3.....User10).
My problem is:
I want to insert rows and the combobox for each row have to show the same user I set to the normal combobox.
Example: The normal combobox have "User1" as value....I want my new row have the "User1" selected and showed inside the columncombobox
The normal combobox have "User3" as value. Now I want the new row have the "User3" selected and showed inside the columncombobox. For now, if I change value in the combobox. My new row have the columncombobox value set to blank and if I click on it. I can see all the user inside.....
I have Dataset ds filled up with values Until now I was displaying values in GridView. Now I want that all the rows should be columns and columns should be rows.I have 2 options: Either 1 I can directly convert grid to columns and display it, or 2 I can convert the GridView to html and then write loops to convert. I was trying the 2nd option but I cant figure out how I should do that.[code]With this code I am still getting same as GridView. Please help me for converting rows to columns and vice versa.
View 1 RepliesI have a datagridview.. It is unbound to any database and has 2 columns..1 is item name and other is amount/expense, incurred..I want the total of expense incurred be displayed in the textbox on button click ie adding the numbers in amount column..
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I am Working VB.NET 08 Windows Appl.I Have Combobox and DataGridView in the Form.In the Combobx Having Names list Called "SurName".In The DataGridView on of the Column is "SurName".So when change the data on the Combobx list the dataGridView is Filtering and displaying the values correctly.For this i wrote a code in Select IndexChanged or SelectionCommitedChange Event.
But now my task is when i Type the text in the Combobox the related data should be filter in the DataGridView.If i type any letter in the Combbox the datagridview rows starts filter.
For Ex: Names are like 'Mali', 'Malu','Maal','Mouli'.
If i type 'M' letter in the Combobox then 4 rows Filter in the DataGridView.
If i Type 'Ma' then 3 rows ,
If i type 'Mal' then 2 rows,
If i type 'Mali' then 1 row.
How to copy the all rows of dgv that is bound to another dgv that is not bound?
View 7 RepliesI'm using an unbound datagrid to make a balance sheet and I need to have a certain row sum the previous rows but it only concatenates (obviously the cells default as strings but I don't know how to fix it). I've really only worked on VBA and this is my first crack at .net Here's what I've tried that is wrong:
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Is it possible to query an unbound DGV to get a collection of rows where a column contains a certain value? Can LINQ do this?
View 10 RepliesI have two datagridview's both are databound. First one shows items for sale and the second stores all the items that were sold. I am trying too transfer selected rows from one to the other but no matter what I keep getting told "Rows cannot be programmatically added to the DataGridView's rows collection when the control is data-bound."
View 2 Replieswhen you can't make use of the item value property in an unbound combobox? I get access to it in html, so one would think you could do it in .Net.
View 8 RepliesI have a table in a data grid the columns are bound to the columns...
SQFT QTY WIDTH LENGTH
i also have added into the datagrid an unbound column called Yeild%.what i'm trying to do is the following formula
SQFT / (QTY * (width * length / 144) and have the result return the answer in the unbound yield column for that row represented as a percentage
So if SQFT = 178 QTY = 2 Width = 144 Length = 102 answer would be 0.87 (rounded)
so this would be 87%
I have a DataGridView (dgv) on a Windows form (VB.NET) which is bound to a datatable. One of the bound columns is a an ID (Foreign Key) to another datatable. All I want to do is Hide the ID column and populate an unbound column with the Name (ParmName) for the user. I searched the foreign value in the datatable and retrieved the information. I set the Value of the cell in the Datarow. All works well, but does not display. The cell accepts the value...I can even Debug.Print the values to the console. They are there just nothing displaying in DataGridView. Nothing odd about DataGridView. Should be straight forward...
My Code
,
Dim dtParm As DataTable = MyDataSet.tblParameter
Dim dgv As DataGridView = Me.dgvResultNum_DataGrid
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What I'm just trying to do is the following:I need to fill a combobox from a dataset, but I have to translate the entries before displaying them. That's why I assume I have to use a loop to add the Items.
View 2 RepliesI want to use a CB where I can define the display/value combinations. The same way a radiogroup works.I have been searching for hours and can't find an answer. This is commonin other languages but apparently in VB it is only done when using a Bound CB.
View 4 RepliesI have an unbound DataGridView that I am trying to fill with data, but am having a problem with the combobox column. I create the columns like this:[code]That works, and I have my columns like I want them, but I don't know how to add a row AND select the appropriate item in the combobox. I am adding items like this:[code]I can't figure out how to set the combobox column. And to top it off, since I changed the column from a text column to a combobox column, the grid is throwing exceptions, although it doesn't tell me what's wrong, it just tells me to handle the dataerror event, and all that I can get from that is e.Context = 3 and I can't find out what that means. Probably a type mis-match, but I can't find the proper way do select from the combobox. The rows add OK, but when I scroll the combobox column into view the first item is selected then the errors get thrown.
View 1 Replies