Arrays - DataGridView Not Showing Data

May 22, 2012

I have looked around quite a bit, and nothing seems to answer my question in particular. I have DataGridView in which I add rows and columns dependent on a certain record count of geospatial data that is held in ArcGIS. The data is then passed through to the gridview for editing. So I do not use any databinding methods, rather it is a very manual process. I store data into a two-dimensional arrays, which indexes are based off of those certain data record counts. After the loops are complete, the data should be stored in each cell dependent on index. The very last row that was populated is populated perfectly, yet the other 72 (or so) rows are blank. Here is the code as follows:

[Code]...

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Showing Data 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

[Code].....

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Data Not Showing Up Initially In Datagridview

Apr 16, 2010

Okay I have everything working as it should but when I first start up the data doesn't show up in the datagridview until I enter another record. It seems to be at the End Sub part of the button click Enter Record.This is what I have at form load event.

[Code]...

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Any Method Of Showing Data Attractively (No DataGridView)

Apr 9, 2011

I'm looking to display some data taken from an Access database. It's just a table of data but all of Visual Basic DataGrid stuff seems too...bland and businessy. I want something that looks really attractive and would be suitable for a game (a sports management one). I'm using some Krypton Controls and even though there is a DataGridView in there, again it's not what I'm looking for. I could just have a listbox for each column of data and that would allow me to customize the style completely, but it would be a bit fiddly working out sorting and stuff (even though I reckon I could do).

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Datagridview Not Showing Modified Data By Other Form

Dec 11, 2010

I am creating one application using visual basic.net and sqlce I have two forms name Form1 and Form2.

I used Form1 to add data to database using OLeDb command I used Form2 to show data in datagridview by using dataset[code]...

Form2 Datagridview show the old data only, it do not show the recently added data by form1. I mean when I build my application datagridview show the data which is already in the database, but it does not show the data which is added by the form1 during run time.

Some one suggested me to fill the datagridview at run time by using OLeDB command. Then I created Form3 to fill the datagridview2 by using OLedb command and datareader and found that Form3 shows the recently(added by Form1 at run time) added data.

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Datatables - Arrays - Reads Data From Xml File And Displays It In The Datagridview

Oct 2, 2011

I have the following code, which reads data from xml file and displays it in the datagridview. It all works fine:

[Code]...

Instead of showing read data in datagridview, i'd want to read the data from xml file into one dimensional array: X(Impedances) Or is there a way to read value from this datatable into string variable without getting data from datagridview? The point is: i'd want to scan through all "Impedance" values (which are read from xml file) and compare with value y to catch the nearest value to y. How to do that?

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Dataset Bound Datagridview Not Showing Latest Data From Database

Jun 5, 2011

I am creating one application visual basic and sqlce.I have two forms name Form1 and Form2.

I used Form1 to add data to database using OLeDb command and used Form2 to show data in datagridview by using dataset[code]....

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Arrays - Get The Data From The Datagrid After The User Entered Data In Textboxcolumn?

Mar 5, 2011

Possible Duplicate: DataGridView - Validating for Cell?i have a requirement. i dont know how to get the data from the datagrid after the user entered data in textboxcolumn. i also want to validate the entered text in datagrid cell.

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VB 2010 : DataGridView Not Showing

Nov 15, 2011

Unable to display data in datagridview : vb 2010 express + mysql server 5 + odbc connector

1. I am able to connect database successfully. I am using arraylist to set data.& also i m

getting till it set to dataview (Object name )

2. Till now i am not added any column name in datagridview property setting .

[add/remove column]'[code...]

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Multiple Combo Boxes Showing Data From The Same Data Source?

May 10, 2010

I have 5 combo boxes that need to show the same list of items that come from a single dataset table. I have managed to bind the datatable to the combo boxes no problem at all.. but when I run the application and select an item from one of the combo boxes all the others change to the item I selected. After some research I believe that this problem is something to do with using the one datasource so I have tried assigning the dataset datatable to 2 different variables and used them as datasources for 2 of the comboboxes but the same still happens.

A work around to this I can see is to call the same methods and SQL select statements 5 times over to get individual datasources for each combo box but this doing that sounds crazy to me. how I can get around this easily? Code snippet below shows 2 combox boxes and their datasources. I'm using VS2005, .Net 2

ComboBox1.DropDownStyle = ComboBoxStyle.DropDownList
ComboBox1.DataSource = AllergyListDataSet.Tables("ListOfAllergies")
ComboBox1.DisplayMember = "Condition"

[Code]....

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Arrays And Adding Rows In A Datagridview?

Sep 4, 2009

I have an unbound datagridview, the datagridviews columns count may very depending on how many are needed like so

For i = 1 To myColumn
Dim RP As DataGridViewColumn = New DataGridViewCheckBoxColumn
RP.AutoSizeMode = DataGridViewAutoSizeColumnMode.None

[Code]...

The problem with this is that it puts everything in the first column instead of each column.

What I was trying was to have it place each value into its own column.

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Fill The Datagridview's Datasource With 3 Arrays?

Sep 30, 2009

I have a datagridview with 3 columns.

Now I need to fill the datagridview's datasource with 3 arrays.

Example:

(column1) Username- Joe - Mark - Thomas
(column2) Password - Joe - Mark - Thomas
(column3) Activiated - Yes - No - Yes

Then after i split what should I do? Should I add 3 arraylists in a class or should I use structure and how?

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CheckBox Not Showing When Adding Row To DataGridView?

Mar 7, 2012

Have a unbound Datagridview with first column set as a checkbox and second column just has text.When adding a row the checkbox does not show, what am I doing wrong.Code to add Row:

DataGridView2.Rows.Add(False, FolderBrowserDialog1.SelectedPath)

The code that adds the rows also saves to a file and then there is seperate code to load datagridview at the start of the programme.If I close and reopen programme it displays the checkboxes.

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DataGridView Not Showing Value In Added Column?

Sep 16, 2010

With this project, I created a SQL Server DB with related Dataset and DataTable a while ago with about 10 columnsWith the code below, I fill those columns with values in a new row and add to the datatableThe datatable is bound in a datagridview and all has worked fine until I tried to add a new column to the dataset/table. After adding the new column and rebinding the datagridview to the updated table, the DGV now shows the new column, but the data for that column fails to show up in the DGV.

Dim dt As Date = DateAndTime.Now
If My.Forms.DataGenerator.TextBox4.Text <> "" Then
My.Forms.DataGenerator.TextBox8.Text = dt

[code].....

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VS 2010 - DataGridView Output Not Showing?

Sep 7, 2011

For a class project I'm supposed to write a program that requests a team as input and displays the players from that team in the first column. The players should be sorted alphabetically by their last name, and if they have the same name they should be sorted by first name accordingly. My program compiles and I'm fairly certain that I've done most of it correctly. The second column should be filled with the batting average of the corresponding player from the left column.

My problems are as follows:

1) I can't get the DGV output to show correctly, it posts the player's name with the batting average of that player in the following downward cell.

2) I'm not sure how to further use the .Split method to separate the first and last name after already separating the name from team/at bats/hits, and can't find any info regarding this topic. Also, I can't figure out how to sort in reverse, I've only seen the Ascending and Descending options so far for sorting.

3) Is the way I've figured the batting average the most efficient/correct way, or is there another better way?

[Code]...

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Showing Data From Database Aside From Data Grid View?

Sep 8, 2011

i was wondering if there are other ways of showing data coming from the database.currently [ as per in my previous thread] i am using a [bind] datagridview.e.gthe table has

id, name, quantity

im thinking that listbox could be one, but it just shows 1 [e.g name].

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VS 2010 - Making Arrays Into Panel Or DataGridView

Mar 15, 2012

I am making a array (unknown value) into a grid for a game of pairs (where you must get both of the cards). So far I have specified the array to a specific size of either 6, 6 10,10 or 16, 16. using a button. The selection is defined from the button as specified before
Dim NumberOfCards(Selection) As Integer
Dim NumberOfCards(Selection) As Integer
Now I have a panel box which I want to add the number of rows / columns as the array sizes which I cannot do. But also add a image specific to all of them.

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Datagridview On Datarepeater Showing Only Most Recent Fill

Jun 14, 2010

Is there any way to have a datagridview on a datarepeater with more than 1 row showing?

I have a datagridview on a datarepeater control. The datarepeater and the datagridview are joined on a common field in 1-to-many fashion. The form is designed so that there are 2 rows of the datarepeater visible at any one time. The datagridview is populated in the datarepeater's drawitem event The problem is that it behaves as if there is only one datagridview total rather than one datagridview per row. The drawitem event executes when you scroll to a row. Because 2 rows of the datarepeater are visible, the fill code is executed twice when the form is opened. But the second fill overrides the first one. So you've got this form with 2 different rows but the data in both datagridviews is the same but is right only for the bottom one.

Is there any way to correct this? If I made only 1 row visible, that would eliminate the wrong data. But I want to be able to show more that 1 row at a time.

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Datevalues Is Showing Wrong In The Datagridview Column ?

Feb 4, 2011

the values in the datagridview column datevalues is showing "February 03, 2011 6:30" but is writing in database "February 03, 2011 6:29:59" .i don't know how to fix this

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Forms :: DataGridView Display - Hiding And Showing

Mar 31, 2009

I have a form e.g. Form1 , which displays a datagridview.
1) On form load, the datagridview doesn't have any data
2) The user clicks on a button called filter, this opens a form where the user can specify parameters to filter the data by
3) This form calls a setData() in Form1, which fills the dataset with the data

This works fine. If I click on a button called controlPanel it launches another form and hides this. E.g.
dim cp as new ControlPanel()
this.hide()
cp.show()

On the controlpanel I have a button that links to form1. If I click on it. E.g.
dim frm as new Form1()
this.hide()
frm.show()
It redisplays Form1 but without any data in the datagridview.

I think the problem is that since I am creating a new instance for Form1 it comes up with the blank Form1. Is there a way to redisplay Form1 so that it retains the data that was displayed last, without having to retrieve the data from the database.

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Hiding / Showing Rows In TopLevel DataGridView

Jan 8, 2010

I've embedded a form into another form by changing the Top Level property. My problem is that the new implementation does not allow me to edit the DataGridView at runtime. Here's the code I'm using from my main form:
Dim f As New form2()
f.TopLevel = False
Me.Controls.Add(f)
f.Show()
f.showRows()
f.showDbvHeader()
When I call the two methods on the onload event in form2 they run OK for the remainder of the event but as soon as it ends, the DGV reverts back to default.

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Showing Combo On DatagridView Begin Edit?

Mar 10, 2009

Private Sub DataGridView1_CellBeginEdit(ByVal sender As Object, ByVal e As System.Windows.Forms.DataGridViewCellCancelEventArgs) Handles dgvProduct.CellBeginEdit

ComboBox1.Visible = True
ComboBox1.Select()
ComboBox1.Focus()
ComboBox1.Text = DataGridView1.Item(0, DataGridView1.CurrentRow.Index).Value

End Sub I have a datagridview, all i want to happen is when i click on the cell (on columns(0)) the combo Box will appear (combo box is with item) so i will select the items on list.. after selecting the item it will display on the current datagridview cell. now my problem is when im Begin Edit, the focus should go to the Combo Box in order to select the item by Keyboard and not by mouse..

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VS 2010 Drop Down List Showing A Datagridview?

Jun 6, 2012

I was thinking of using a dropdownlist showing all names. But is it possible to have a dropdownlist showing a datagridview showing more details such as names, address and telephne number of the person?

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Detect Which Column Is Showing An Editing Control In A Datagridview?

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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Query/search Database Showing Results In Datagridview?

Mar 13, 2009

I am making a project in VB 2008 that has a Form (form1) that allows me to add new records to a database, and another Form (form2) that allows me to search for records in a database. I have done Form1 already, but my problem arrives in Form2 where I have to query the database. This form consists of 1 textbox (txt_search.text), 1 button (btn_search) and 1 datagridview (datagridview1). The name of my database is db_extras_test2003.mdb and the table I want to search records from is tbl_contacts.

I know +/- the SQL sintax to query the database (SELECT * FROM tablename WHERE columnname = (here i dont know if i put the variable name i have set for the txtbox, or the textbox itself)).I want this in a way that I (or other users) type in the textbox, hit the Search button and the results are shown in the datagridview (i can show the results in another way if it is better to do so).I have done the connection to the database already. The code I have so far is the following, but it doesnt work

[Code]...

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Reference DataGridView Control Before Showing Its Parent Form?

Mar 30, 2010

I have a datagridview control on a form that I want to make readonly, before showing the form. I can disable it before showing the form with the [code]...

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Showing Iteration Through A DataGridView, Updating The Dispaly/redraw?

Feb 9, 2012

I have a DataGridView with a single column that currently displays a short list of items. When the user clicks a button to run an update, each row/cell is read and processing begins. I would like to have the selection idicator move down the rows in the DataGridView as it completes processing of each record. How can I display the iteration of the DataGridView rows while the processing is underway? A redraw of the DataGridView or something.This is a VB.net windows form, I know how to do this with AJAX I think, but how can I in a Windows form?

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Single Form With DataGridView Showing Values From Oracle DB

Feb 2, 2010

I have a single form with a datagridview on it showing values from an oracle database. I am trying to set up a way of detecting if the row/column I click on is empty or not, just as a little exercise. I have so far got this:

Private Sub DataGridView1_CellClick(ByVal sender As Object, _
ByVal e As System.Windows.Forms.DataGridViewCellEventArgs) _
Handles DataGridView1.CellClick
Dim c, r As Integer
c = e.ColumnIndex
r = e.RowIndex
[Code] .....

The message going into lbl2 shows the co-ordinate values of any box I click in but as you can see with the IF statement below I am trying to see if the system can detect whenever I click in a value that is empty (null or ''). When I run my form and populate the list with a column of names I can click in 0, 0 cell and I get a message saying the 'Box is not empty' as above.

But when I click in any of the next boxes e.g. (1,0) (2,0) etc I get this:
'Index was out of range. Must be non-negative and less than the size of the collection.
Parameter name: index'

Pointing to this line of
If Not DataGridView1.Item(r, c).Value Is Nothing Then
Not sure what this means at all. I am under the impression that my piece of code is gathering the value of the item depending on the co-ordinate values. so why should this fail? What index/collection is VB talking about?

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DataGridView - Showing Textbox Column In Multiline / WordWrap Mode?

May 15, 2010

How do I show textbox column of a datagridview in multiline format using vb.net?

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Storing Data In Arrays?

Apr 22, 2011

storing data into an array. I understand how to place information in one record eg in index 0, but how do i place data into several records(indexes).

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