I am trying to count all the rows on a datagrid after it has been populated from my DB. I have searched online on how to do this but nothing seems to work.
here is how I grab my data
test.SelectCommand = Ssql
test.SelectParameters.Clear()
test.DataBind()
where test is my datasource it gets thrown into. Any help is appreciated TY!
My code for this thing is:
TextBox3.Text = DataGridView1.RowCount
it display the number of row populated with some data.
Gets or sets number of rows displayed.
test.RowCount
Can also use.
test.Rows.Count
Related
I haven't found exactly what i need in the forums. I don't want to move selection or scroll index, all what I need to is to change the entire row with a specific index to be the last line in my datagridview.
I need this to happen automatically when i edit this row.
P.S. Datagrid is Unbound
for example:
dgv.rows(index).index=dgv.row.getlastrow
However, the debugger return an error that index is read only.
Please help guys!
This worked for me:
Dim curr_row As DataGridViewRow = idgv.Rows(Index)
Dim curr_index As Integer=idgv.Rows.GetLastRow(DataGridViewElementStates.Visible)
idgv.Rows.Remove(curr_row)
idgv.Rows.Insert(curr_index, curr_row)
I have a function which return a list of countries as data table. How do I add these row values to a combo box?
For Each row as DataRow in fooDataTable.Rows
combobox.Items.add(row)
Next
Some how this does not fill up the values on my combo box. The datatable returns 100 rows. Each row has 2 columns. I am trying to add all the 100 datarows with the first column. Any help would be greatly appreciated.
A DataRow is an object and while objects can be added to a Combo or ListBox, in this case the result is not very useful. When you store an Object in .Items, the result of the .ToString function is what displays. In this case it will just display System.Data.Datarow
The best solution is what LarsTech suggested and use the existing datatable as the datasource. This is economical because there is nothing new created for the CBO:
ComboBox.DataSource = fooDataTable
ComboBox.DisplayMember = "column name in DT"
Another way is to modify your loop:
combobox.Items.Add(row("col name").ToString)
This adds the data from the column name to the cbo. If this was something like peoples names and you wanted to show First and Last name:
combobox.Items.Add(String.Format("{0}, {1}", row("LastName").ToString,
row("FirstName").ToString))
This is similar except we are formatting the contents of both columns as we add it to the CBO.
Still another way is to create a class object for each row which returns what you want to display via the ToString override; and add them to the CBO, but that is overkill in this case, given the economy of the first alternative.
I'm working in vb.net and trying to update dgv to list a customers name instead of ID. I already have all the functions to get the customer name given the id, so that isn't much of an issue. My issue is that when I load the DataGridView, it will only select the id.
Ideally, I would like to have it pull the Name while loading, but what I've been trying is running this AFTER it's loaded
For Each row As DataGridViewRow In dgvPhones.Rows
Dim customerID As String = ""
Dim customerName As String
Try
customerID = row.Cells("Customer").Value.ToString
Catch ex As Exception
End Try
customerName = CCCustomer.SelectByID(customerID).FirstNameLastName
row.Cells("Customer").Value = customerName
Next
I put a couple of breaks in and checked the IntelliTrace, and it's pulling in the correct values and all, but it's not actually overwriting the value in row.Cells("Customer"). It just keeps the original id number instead.
To make matters MORE confusing, I've done this before with an MEID/ESN Hex to Dec converter in the same exact place, using the exact same method, and it works just fine.
Can anybody see anything wrong with my code? I've tried using various combinations to see if it's failing because of a bad-value in the database, but it works for NULL/0/-1/1/""... so I'm kind of lost.
Alright, here's what I ended up doing.
Since the DataGridView was only pulling in the CustomerID, I created a new column called CustomerName and made the CustomerID hidden.
Then, I ran my code exactly as seen above, but made it so it pulled in from CustomerID, and wrote to CustomerName.
I guess CustomerID only works as an Integer... very strange, I couldn't find a property for the column saying it could only take int's, but it's working now.
A little background first:
I have a telnet session that is connected to a cluster, it stays connected and receives information periodically. Incoming information is processed and is displayed in a DataGrid. This happens in real time.
Currently the newest information is displayed on the last row (bottom row).
I would like the newest piece of information to be displayed on the top row instead.
DataGridView1.Rows.Add(New String() {InfoA, InfoB, InfoC, InfoD, InfoE})
DataGridView1.ClearSelection()
DataGridView1.FirstDisplayedScrollingRowIndex = DataGridView1.RowCount - 1
Any help would be appreciated.
Instead of using DataGridView1.Rows.Add() you can use DataGridView1.Rows.Insert() as this gives you an extra parameter and the ability to add the row at a specific row index, in your case a zero index I think will add the row to the datagrid as the topmost row:
DataGridView1.Rows.Insert(0, New String() {InfoA, InfoB, InfoC, InfoD, InfoE})
I have a table in a report and a textbox that changes its background color based on the value(s) in the table. Right now I have the background color expression for the textbox set to:
=iif(Me.Value = ReportItems![NewValue].Value, "Yellow", "Transparent")
"NewValue" is the name of one of the columns in the table. The above works fine if the textbox value is in the very first row in the "NewValue" column, but not otherwise.
How do I fix this so it will work if the textbox value shows up in any row in the "NewValue" column?
Sorry, I'm a little new to Reporting Services and haven't seen any functions for table controls.
Instead of ReportItems![NewValue].Value, you can also use ReportItems("NewValue").Value, by the way
I finally got this working yesterday thanks to this blog post:
http://mpasharp.spaces.live.com/blog/cns!5BA71A558863C810!191.entry?sa=340192646
I basically did what he did in the post, modified slightly for my report. I also added a function for getting the row index of the value I was looking for (variables are a little different in mine).
Public Shared Function GetChangedValueIndex(txt As String) As Integer
Dim counter As Integer = 0
For Each s As String In ChangedValueList
If s = txt Then
Return counter
End If
counter += 1
Next
Return -1
End Function
The other caveat is that calling the function to add a value to the array has to occur earlier in the report than anywhere you want to check for it. The table I was working with is actually at the end of the report (and can't be moved for requirements reasons) so I made a copy of that table, moved it to the top of the report, and set it to be hidden.
Unbelieveable that there isn't an easier way to do this.