DataGridView's Column Values Disappear After The Form Is Shown?

Aug 16, 2011

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.

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When Dependant Column In DatagridView Then How To Filter Data Because Privious Selected Items Are Disappear

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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Calculate A Column Values Based On Other Column Values In Datagridview?

Jun 3, 2011

am trying to calculate the values in rows in column 6 based on values of column 5. Bellow is the the code I am using I get a run time error about the string not formatted properly

[Code]...

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Add Values In A Column Of A Datagridview?

Jun 2, 2011

i want to dynamically add the values in the column of a datagridview the row of which is also being created dynamically...

Form1.TextBox10.Text = total
con.Open()
cmd = New SqlClient.SqlCommand("select product,Quantity,MRP,Sale_Rate,Disc_Amt,Amt from sale_table ", con)

[Code].....

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Conditioning The Values In The Column Of Datagridview?

Mar 15, 2012

i have a datagridview on my form with customers info which is linked to my database. i want to execute a line of code based on the information in one of the columns in the datagridview??? for example i have a datetime column which stores dates(and maybe time) i want to use an if statement(or any code) to compare the date the customer entered. if its today then my code will execute!!

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Get Distinct Values In A Column Of Datagridview?

Mar 9, 2011

Like "SELECT DISTINCT(Col)" in sql query, how do we perform this in datagridview?[code]...

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Asp.net - Textbox Values Disappear On Postback?

May 11, 2012

I have an asp.net page with a button that adds an additional row to a gridview for input to the database. The gridview consists of 3 textboxes(template fields), when I add a row the information already entered somehow disappears on the postback. I want the button to add additional rows without disspelling the data in the other rows, until I hit the submit button. Here's my code

Private Sub AddNewRowToGrid()
Dim rowIndex As Integer = 0
If ViewState("CurrentTable") IsNot Nothing Then

[Code].....

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Add The Values In Column For Datagridview And Display It In A Textbox?

Apr 16, 2010

im trying to add the values in column for of my datagridview and display it in a textbox, but the calculation does not kick in unless two rows are displayed. if one row is displayed in the datagridview, then my textbox remains blank.[code]......

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.net - Using Values From Two Different DataRow.Columns For One DataGridView Column

Jan 21, 2011

I need to display a column called Full Name in the my datagridview, but the datasource (datatable) does not have a FullName column. It only has FirstName and LastName columns. I'm setting up my DataGridView like this:

[Code]...

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DataGridView Column Formatting - Date Values

May 8, 2009

I have a datagridview in a form in windows application in which I have a column which accepts date values. In this column I want user to enter numeric values alone and when the user moves to next cell the value should get formatted to date type value(ex: 05/09/09). Similarly I have another column which must accept alphabets alone.

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Pass Different Values From A Listbox To A Certain DatagridView Column?

Aug 27, 2009

Rather using a DatagridView Column ComboBox i need in this phase of my project, to use a listbox outside the datagridview ,o pass values from listbox to the datagridview. I do not want these Values to be default in that, column of DGV but when adding new rows i want to pass different values,always form listbox to the DGV..

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Unbound Datagridview Column Not Retaining Values?

Jan 10, 2011

I have a DataGridView bound to a binding source. I have also, however, added an unbound column in which I plan on putting numbers calculated from the bound columns. The problem is, Any time I edit my unbound column (on any row), the value doesn't stay. If I programmatically edit the values, they never show up. If I type in the cell, then upon hitting enter or clicking outside of the cell, whatever I typed disappears.

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VS 2008 Empty Values In Packets Disappear - TCP?

Jun 10, 2010

Empty values in byte array at the end of one packet are replaced by beginning values of the next packet sent in TCP connection. How may I avoid this?

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Adding The Values In A Column Of Datagridview On Button Click?

Jun 22, 2011

i have a datagridview and in one of the columns i m storing the amount on button click...i want to add the values of the amount at that time only i have done this but it is displaying 0 in the required textbox total += Form1.DataGridView1.Rows(counter - 1).Cells(6).Value

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Does DataGridView Always Depend On Public Properties For Column Values

May 26, 2011

At runtime, I have a collection of rows (Row class). Each of them consist of column values, represented by instances of a ColumnValue class. The name of the columns are determined at runtime, and are in a separate columns descriptor collection (Column class).I want to create a DataGridView that displays all Row instances. Of course, the DataGridView's columns shall be exactly those specified by the Column instances in the containing collection.But since DataGridView's columns can fetch their values from a list item's public properties only, and I cannot easily define such a property at runtime, I cannot use DataGridView to display the tabular data.

' Classes for table structure representation
Public Class TColumn ' describes my columns
Public Name As String

[code].....

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Forms :: Calculate Values In Column And Display In DataGridView?

Aug 29, 2011

i am doing a small project for my business and i got stuck with this 2 weeks ago and still no progress.

I have an access db table "store" that has columns: (filldate,brand,model,plateno,mileage,litres) where i am storing these info each time a car in my company fills gas. For example (8/25/2011,Renault,Megane,5487844,3943,20).

What i want to do now is to display in a datagrid the total consumption of gas (litres) with the kilometers driven (mileage) between 2 dates.

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Setting Values To Predefined ComboBox Column In DataGridView

Jan 27, 2010

How to set values to a predefined combobox column in datagridview i.e., I want to set some values to this column other than binding

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Insert And Retreive Values From Database In Datagridview Combobox Column

Jun 18, 2009

I m filling values in DataGridView using following code [code]Can anybody help me to insert and retreive values from database in datagridview combobox column.

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When The Mouse Cursors Hovers Over An Item In The First Column, All The Subitems Of That Line Disappear?

Jun 10, 2009

I have little Problem with my ListView. When the mouse cursors hovers over an item in the first column, all the subitems of that line dissapear. If I click in it, they eppear agein. Also, they appear, if I hover the mouse over each of them.This my code for DrawSubItem-Event. I don't have implemented a DrawItem-Event because that made it even worse.

Private Sub lvResult_DrawSubItem(ByVal sender As Object, ByVal e As System.Windows.Forms.DrawListViewSubItemEventArgs) Handles lvResult.DrawSubItem
Dim sf As New StringFormat()[code].....

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VS 2010 Add Values Of Raw Data In Column 2 And 3 And Input Answer In Column5 In Datagridview?

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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Adding Values Of A Column In A Data-bound Datagridview And Placing Results In A Textbox?

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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DataGridView Row Headings Disappear On Tabpage2?

Feb 16, 2010

Public Class Form1
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load

[Code].....

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DB/Reporting :: SQL Select Query In Form - Form With A Datagridview That Displays All Of The Values

Mar 26, 2008

I am using VB2008 Express and a MSSQL Server 2005 db by the way! I have a comprehensive SQL statement, which should fill my Grid:

DECLARE @Sum NUMERIC(9,2)
SELECT @Sum = SUM(I_LS.lmenge)
FROM dbo.lfs AS I_L

[CODE]...

Now here is my problem! I want to have a form with a datagridview that displays all of the values I am querying. This shouldn't be a problem I guess. However, I have no idea how I can integrate two textboxes that can be used to enter the selection criteria (WHERE I_L.lfsnr LIKE '%1253') AND (l.sped_journal = '11-08')[/SIZE]. I have googled and read many threads so far but didn't stumble upon anything that would suit my needs and answer my question. Maybe it's just too elementary!? By the way, it is very important that the input of textbox1 ((WHERE I_L.lfsnr LIKE '%1253')) is linked to 3 positions in my SQL query to define the search criteria!

The worst thing is that I don't want to have a bindingnav displayed! I do not need any delete, update or add functions just the select option, however!

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Which Datagridview Is Currently Shown

Oct 18, 2011

I 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]...

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Can't Get The Data To Be Shown In Datagridview?

Feb 1, 2011

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]...

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Add Controls To A Form Fails Because They Disappear

Jun 10, 2010

I have an add-in that creates a form, adds controls to it, then tries to add some more. But on the second attempt to add controls, they disappear. If I have an error in my code that gets displayed in a message box I can see the new controls behind it. When I click OK they disappear. If I have no error and step through the code, they are there according to properties, although I can't see them because the form will not display while in debug mode. When the program finishes, th controls that were created are gone. Perhaps I am selecting the form to edit wrong.Too bad there isn't any documentation (or any than can be found) that describes how to do this.[code]...

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Controls Disappear On Form Restore?

Aug 22, 2010

I experience very strange behaviour of a windows form written in VB.NET 2005.
The form contais DataGridView with data.

I minimize the form to Windows task bar, then I restore it. The form appears, but the DataGridView and other controls are not displayed. In order recover from this situation, I need to resize the form or maximize it.

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Lines Disappear When Form Is Minimized?

Nov 19, 2011

I have made a drawing program. It draws a line when you click in the form, but if the form is minimized or another window is on top of it, the lines disappear partially.

Here is the

Dim FormMiddleX As Integer
Dim FormMiddleY As Integer

[Code]....

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Make This Form Disappear Of 1000millisecond?

Mar 20, 2011

i have this custom i want to use as message form.. it should just display and disappear after 1 second.i add timer and enable it with interval of 1000, timer started on form load.... there and stuck. form displays but wont disappear.. how do i make is disappear.

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DataGridView - Formatting One Column Differently On Form

Feb 25, 2011

I have a datagridview I am displaying on a form and would like to format one of the columns differently then the available formats. I have a column that is a decimal(18,2) (in the table) named "MyDecimalField". In asp.net I could do this, in the "template field" of a datagrid.
math.round(MyDecimalField / 60 , 2)

In VB.net forms I cant figure out how to do that. Basically I need to divide the cell by 60 and round that to 2 decimal places.
IE
the Cell contains this: 1283.93
I want the user to see this: 21.40
1283.93 / 60 = 21.3988333 then round it to 21.40

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