I need to sort the datagridview programmatically. I googled a lot but nothing worked for me.
Datagridview is not bound to any datasource. Data is being added manually.
My requirement is to sort it as when a 'Sort' button is pressed.
Can anyone suggest me code in vb.net?
Try like this
DataGridView1.Columns(0) -> Give which column you want to sort
System.ComponentModel.ListSortDirection.Ascending -> Give direction of ascending or decending
Private Sub Button1_Click_1(ByVal sender As System.Object, ByVal e As
System.EventArgs) Handles Button1.Click
DataGridView1.Sort(DataGridView1.Columns(0),
System.ComponentModel.ListSortDirection.Ascending)
End Sub
The code above works. You can, of course, choose any valid column. Here it is in C#, the only difference is the square braces []:
gridview.Sort( gridview.Columns[0], System.ComponentModel.ListSortDirection.Ascending );
Related
I have a datagridview in which I want to insert a button for removing the selected row. I created without any problems the AddRow Button and, following the same idea, I tried to create the RemoveRow button with the following code:
Private Sub Button6_Click(sender As Object, e As EventArgs) Handles Button6.Click
DataGridView2.Rows.Remove()
End Sub
When I start debugging I'm having BC30455 error, about not specified argument. What am I doing wrong? I tried to find out here in the forum but I've found only sth about C# and not VB.net
Best regards and thanks all are gonna answer me.
I have a very simple question that i can't seem to find the answer, i have looked up and down in google, msdn with no luck...
it's really simple yet i can't seem to wrap my mind around it.
here goes:
If i'm using simple Drop down style combo box(the one that looks like a listbox with textbox attached on top of the cbobx control) when i want to update one of the value in it, once i start typing in the textbox the selection inside the combo box is gone. Thus i can't update the value inside the combo box.
i know i can use a regular text box to do this, but i'd really like to make this work or i would really loose sleep over this.
Thanks in advance for all your help.
Ray
It doesnt seem very intuative editing the selection in a combobox, but the following should do the trick:
Private cbindex As Integer
Private Sub ComboBox1_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ComboBox1.SelectedIndexChanged
cbindex = ComboBox1.SelectedIndex
End Sub
Private Sub ComboBox1_LostFocus(ByVal sender As Object, ByVal e As System.EventArgs) Handles ComboBox1.LostFocus
ComboBox1.Items(cbindex) = ComboBox1.Text
End Sub
In VB 2008 I created 2 list box. The first list box is to load all the data in my database in a specific row, the other list box is when I double click on the data/item on the first list box the specific data/item need to be transfer to the second list box.
I manage to transfer the data, but the output it gave was wrong. Instead of the actual name of the given data/item the output it gave was System.Data.DataRowView. I tried using .ToString() but nothing happens. I used the drag and drop method for the data adapter connection and the database I'm using is MySQL. I use the "Use data bound items" on list box 1.
You should do it like this,
Private Sub ListBox1_DoubleClick(sender As Object, e As EventArgs) _
Handles ListBox1.DoubleClick
' checks if the item is empty
If ListBox1.SelectedItem.ToString.Length <> 0 Then
' adds on listbox 2
ListBox2.Items.Add(ListBox1.Text)
End If
End Sub
See this,
with simple code you can use this
Private Sub ListBox1_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ListBox1.SelectedIndexChanged
ListBox2.Items.Add(ListBox1.SelectedItem)
End Sub
Good day, I've just started teaching myself VB.net. I'm trying to create a simple note keeping program.
I've come across a problem, where by I call the Clear method of the ListView object, and its column headers disappear.
screen shot of what happens
The code for button 2 is:
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
lstNotes.Clear()
End Sub
Any help will be appreciated, thanks!
The Clear method on a listview does exactly that. Just as advertised.
Use lstNotes.Items.Clear() instead.
Augh, as luck would have it, I got the answer Just after posting.
lstNotes.Items.Clear()
use Items.clear() instead!
lstNotes.Items.Clear()
Good morning all! Myself and a co-worker are tasked with a system-wide scripting solution but neither of us are .NET programmers so we need your help.
We have a GUI that displays a radio selection box (3 options) that are the three sites where our hospitals are. We need to dropdown located on the form to fill with only the locations based on the selected radio option.
my gui http://web6.twitpic.com/img/40330741-85d91a5637f2445b322e62df17cf3351.4aef01c5-full.jpg
Here is the code behind we have so far (sorry, VB)
Public Class frmCEHLI
Private Sub Label1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Label1.Click
End Sub
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
'TODO: This line of code loads data into the 'CELocDataSet.dbo_Locations' table. You can move, or remove it, as needed.
Me.Dbo_LocationsTableAdapter.Fill(Me.CELocDataSet.dbo_Locations)
End Sub
Private Sub btnSubmit_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnSubmit.Click
MsgBox("Submit button has been pressed")
End Sub
End Class
For the record the Location dropdown is currently databound but its a static SELECT statement which brings us all the locations but we'd prefer it to be cleaner if it only returned the locations based on Site. We are using Visual Basic 2008 Express Edition for development. Any help/code is appreciated, thanks!
Sorry not to respond back sooner, busy, and wanted to dig up a sample that did just what you were needing.
Create two comboboxes on your form. You can bind either fixed values, or from a table on the first combo. Then, from the property/events sheet, first set the "AutoPostBack" to TRUE, then on the events, click for the "SelectedIndexChanged" event to bring up some code.
The "Sender" object parameter will be the combobox itself, so you'll be able to analyse the property settings via debugging to find what key/value was chosen.
Then, run whatever query from your data querying control, business object, or whatever that gets your results, such as to a DataSet or DataTable.
Finally, set the datasource of your second combo to the above result query, set dataTextField and DataValueField and issue DataBind() to the combo.
That should get exactly what you need.
Then, when someone makes a selection from the second combo, you can have code within ITS "SelectedIndexChanged" event (also based on its AutoPostBack or actual submit button on the form).
Hope this helps.
I would create two combobox controls... One for the "where", then, on the InteractiveChange event by the user to post-back to the page using that answer for the second combobox of locations based on the "where" value of the first combo.