Editing Data On Particular Column In DataGridView
Feb 10, 2010
I'm having problems editing the text of a particular column in a datagridview from the front end. The text enters ok but as soon as the cell loses focus it goes back to the old value. The datagrid view readonly property is set to false and I don't have any problem writing to the other columns.
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Dec 17, 2010
I want to only allow editing of one column in my DataGridView, but I want to allow the user to double click on any item in the row, and when the CellBeginEdit fires, force editing of my colum. I started by doing this:
Private Sub dgvCaptions_CellBeginEdit(ByVal sender As Object, ByVal e As System.Windows.Forms.DataGridViewCellCancelEventArgs) Handles dgvCaptions.CellBeginEdit
If e.ColumnIndex <> COL_CAPTION Then[code].....
But this throws an error in the BeginEdit(False) line because 'Operation is not valid because it results in a reentrant call to the BeginEdit function.' which of course it will do, but that is what I want. Is there another way to do this?
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Dec 16, 2009
i have a DataGridView responsible for showing a bit of data and two of my columns allow for user input using comboboxes.The trouble is that one column only needs to show preset values in it's list, but the other needs to both show the presets and allow for the user to enter in their own values.i accomplish this by showing the editing control for the combobox with this bit of code:
Private Sub DGV_EditingControlShowing(ByVal sender As System.Object, ByVal e As System.Windows.Forms.DataGridViewEditingControlShowingEventArgs) Handles DGV.EditingControlShowing
[code].....
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Jun 26, 2009
I've got a DataGridView that has a DataTable as it's Datasource. Whenever I sort a column and then edit a cell, after editing the column, the column autosorts so the recently edited cell is no longer in the viewable area. Is there any way to prevent this auto sort from happening and only sort when I click on the columns?
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Apr 15, 2010
It seems like when there is only one row at the data grid view with a data source pointing to a data table, it's row state for the data table doesn't change when editing. It remained "unchanged" reguardless to how many columns I had entered. However,after editing, when you click on a different row or click on any of the column headers to change their sorting, the row's state from the data table then gets changed to "modified". I'm not sure why the data table's row states gets changed only when you do those things instead of finishing editing itself. Couldn't the data grid view be able to change the data table's row states when you finished editing a cell?
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Jul 19, 2009
How i clear all data and not delete data or column in datagridview?
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Jul 22, 2011
I have a data grid view that contains several columns. The first column is the only column I care about and it contains Result IDs. The view may be filter from time to time. I want to get the Result IDs from all the visible rows and put them into a table variable so I can use ADO.Net to send that table to a SQL Server stored procedure. I currently use a loop (see below). Is there a way to do this quicker without a loop? I'm new to VB.Net and I was hoping .Net would have an impressive method to do the same thing the loop below is doing.
Private Function prvfnc_GetResultIDs(ByVal dgv As DataGridView, ByRef dt As DataTable) As String
Dim rw As DataRow
[Code].....
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May 2, 2011
Iv've always done a loop like below to go through each row of my DataGridView..For Each row As DataGridViewRow In DataGridView1.Rows....Is there a way to specif a specific row and column that i want to get data from? I tried this below but didnt work
MessageBox.Show(dataGridView1.Rows[1].Cells[0].value)
and
MessageBox.Show(dataGridView1[0, 1].Value)
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Mar 24, 2010
How can i extract the values from a column in a datagridview?I would like to put them into a string array.
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Jan 15, 2012
let's say the datagridview have 3 column
|--------------------------------
| id | name | age |
-----------------------------------
| 1 | john | 20 |
------------------------------------
i want to get "id" only from every row i tried this code,but it wont work
For cn As Integer = 0 To DataGridView1.RowCount - 1
DataGridView1.Rows(cn).Cells(0).Value)
Next
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May 6, 2011
i want to fill my datagridview column with sql query and data i have 1 datagridview in datagridview 4 column
column1 column2 column 3 column4
this gridview is undound
i want to fill with sql data
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Dec 15, 2009
I am writing validation for a datagridview which may open a number of different tables (dependant on what the user selects). The idea is that the user will select a lookup table to edit or add too, the datagridview opens (via a binding source) and populates itself with a specific table's data.
The user can then edit the data in the rows and when they are happy update the dataset which in turn updates the database table.
This all works except there is no validation per say prior to the update. As the datagrid loads a different table dynamically I cannot predetermine table column names (without writing a mass of hard coded values) so I would rather go by the datatype of the column since the tables all follow a similar format.[code]...
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Mar 15, 2012
I have a datagridview with 4 columns (id, name, ticket_number, destination), i just want that datagridview on column "ticket_number" to display ticket_number from mysql database and another 3 columns for user input.
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Aug 25, 2011
All my collegue programmer asked me to do is disable the editing of a checkbox in a grid. I have tried to set the column to readonly, does not work, does not seem to have any effect:
dgvPatients.Columns(0).ReadOnly = True in the Load handler of the containing form.
The code happily goes to the compiler, but the GUI still allows editting.
And I tried catching the CellClick event, and in the handler do nothing. It gets there, but still it does, what it did, editing that checkbox. Propably some other event or the parents of the class event is still changing the checkbox.I used dgvPatients.CellContentClick I have also set the property:
In the properties, gridview, edit columns, select that column, bound columns properties, ReadOnly to true in the designer, it let me down. Still the gui lets the user change that check box. what I am doing wrong? My collegue will be in tomorrow, may-be he knows but it bites me this problem.I have searched on the internet, I have spend quite a lot of effort in it, and I am out of options now. What is this??
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Feb 24, 2012
I would like to bind different queries for a long set of columns in datagridview that has been set already during the formload, e.g:
With dgvGrid
.Columns(0).Name = "Dept Code"
.Columns(1).Name = "Emp ID"[code]....
there are still more of it. The data needed for those columns is coming from a different table.
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Apr 23, 2012
So I have a datagridview being populated with data from a database.At this point a user may or may not selected (via mouse click / key press) one or more rows within the datagridview.I need to (upon selection) create a new dataset, datatable and add rows with the some data from the said datagridview.
For example, if a table had nothing but names, e.g.
Joe
Sean
Larry
Chris
Upon the user clicking, dragging a selection over Sean and Larry to add those names to a new dataset so I can pass it to another method for further processing.
[Code]...
Input array is longer than the number of columns in this table.It looks like I'm either missing a column declaration or adding the table to the set?
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Mar 14, 2011
I am having trouble in allowing the user to select the row in the datagridview.
I managed to include the checkbox column in the datagridview but i do not know how to wrte the code such that when the user wants to update or edit the data in the checked row, he just have to check the affected rows checkbox, can be one or many, and then click on ok button, which will then lead him to the data updater form, allowing him to update the data.
Currently i have the below code which can populate the checkboxclumn only.
dbProvider = "PROVIDER=MICROSOFT.Jet.OLEDB.4.0;"
dbSource = "Data Source = '" & Form1.TextBox8.Text & "'"
con.ConnectionString = dbProvider & dbSource
[Code]....
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Nov 27, 2009
I have to implement a column (TransactionCompleted) which will only hold two states Yes/No. I am using SQL Express and wonder which would be the best DataType to go for that column, if I prefer to display the data in a DataGridView column as CheckBoxes later in my application?
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Nov 3, 2009
How to point the textbox as key-in data TO datagridview specific COLUMN because some COLUMN i leave them as a BLANK
Exampel :
column 1=ID
column 2=Range
coulmn 3=Name
my question is :i want to key -in data in TEXTBOX1.text to column 3 Normally i use code bellow,
datatable.rows.Add(text1.box.text)
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Mar 10, 2010
I have a form and in that form is a datagridview listing information from a table in a database. The datagrid is setup as read only and the user is unable to move the columns around. The purpose of the datagrid is to allow the user to select entire records and press a menu button that does some action on them. To make it easier to use the very first column in an unbound data column that I fill with a number representing the row count so 1,2,3,4.... this makes it easier for the user to count how many rows he has selected.
The problem is that the unbound column moves to the last column in the datagrid at random times.This only happens in development not after the application has been deployed. Its annoying because lets say I go in to add a label or change a menu item on the form that has nothing to do with the datagrid I have to make sure that the unbound column hasn't moved.Has anyone else had this problem mixing bound and unbound columns in a datagridview.
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May 7, 2010
I have this test form where I'm testing the idea, but ran into a snag. Now the main idea is to load all the data from a dataset into the one column of the datagridview. This works perfectly as shown in the image. Now there is something that I want to happen, but just can't get it right. when on the DataGridViewComboBox Column I also want to be able to type in my own data if the one I want is not available in the combobox.
Also if there are 50 values in my combobox and 2 of them are:
jacky, jacson
When I type jac, I want the combobox to only give me the options starting with "jac"
Here is the code that I'm currently using:
Dim dt As DataTable
Dim dsNewDataset As New DataSet()
Dim i = 0, intSetArray As Integer = 0
Public Function JT_PullDataWithCOLUMNS1(ByVal Cols As String, ByVal TableName As String) As DataTable
[Code] .....
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Feb 3, 2011
I am trying to link two columns with dates and time to a new column, but the original columns are not in DateTime format. Here is sample of the data:
C_DATE C_TIME
231110
211152
[Code].....
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Jun 3, 2010
I have a datagrid and set of collection of columns for the datagrid. I have added cloumnname and headertext using column collections in design time. I have made false of autogenerated column. I was unable to load the data in datagrid from datatable. If i remove the collection and add bind data in datagrid means working fine but not for the column collections.VB.net windows application.
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Nov 24, 2009
Once I read the property for DataGridView Column which allows Grid Column to adjust as per the data width. I can not recall it or find it.
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Apr 1, 2010
i have a problem with a SELECT statement.I have a table <EisagogiStoixeion> with 6 columns, one of then is < AgonPeriodos>. I want to display data in a datagridview depending on the column <AgonPeriodos>. I use the Select statement like this :
SELECT * from EisagogiStoixeion where AgonPeriodos = '" & textbox1.text &"'.
Value not set for one or more required parameters. This is my problem on the fill command.
If i don't use the where statement everything is ok and i can see the data including the data from the AgonPeriodos column.
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Jun 28, 2011
I'm using visual basic 2010 and i am able to import the raw data from excel and into my datagirdview but i am unable to get the code to add the values of raw data in column 2 and 3 and show the answer in column 5. Do i need to loop it?
The entire project is in the attachment take a look at it.
This is the entire code i have now:
Imports System.Data.SqlClient
Imports System.IO
Imports System
[Code]....
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Apr 9, 2010
How to add a checkbox column at first column of datagridview including column header?After adding, how to code to "check all" or "uncheck all"?
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Jul 28, 2011
I have a datagridview that is populated from an Oracle 11g DB. What I would like to do is add the values of a column together and display the results in a textbox. What would be the easiest way to do this?
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Nov 15, 2011
In my datagridview there are two dependent columns, one is category and the other is items. So I want to filter my item column list as per selected category. But the problem is that when I change the category wise data to datasource of items combobox, previous selected items names disappear because previous items is not in current datasource.
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Apr 19, 2010
I have a form which contains a populated datagridview and I have a button that calls a second form in which I want to be able to add additional rows to the first form's rows.My form2 has about 10 text boxes which the user will use to add columns in a new row...How can I capture the 10 textbox's information and add a row with 10 columns to display the textbox's info?
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