Maximum Record Count For A Datagrid?
Mar 23, 2009what is the maximum record count for a datagrid in vb.net?
View 4 Replieswhat is the maximum record count for a datagrid in vb.net?
View 4 Repliesi have built the following table in a datagrid view component using the following code: -
Private Sub BuildDataTable()
Dim dc As System.Data.DataColumn
Me.mDataTable.TableName = "Tabel 1"
[Code]....
lets say the user wishes to but 1000 into one of the "Time (ms)" cells, but i would like the max value to be 850. how do i then make the cell they attempted to change equal to 850 and display a warnning?
how do i stop them from adding more than 2 decimal places?
I have a datagridview with transaction bindingsource I want the datagrid to show the sorted rows only not all the records when i enter a value into a textbox and click button sort.
View 1 RepliesVisual Studio Pro 2010 Win 7 64 bit running bootstrapped to a MacBook Pro i5 (blasphemer!!!) works really well though!!New to vb.net, have used vb6 for several years and finding the transition interesting to say the least.I have an access database with a vb.net front end all auto bound by the connection and binding wizards (I know, I know...) Not too complicated, but a simple 2 table related db. On the form the parent table shows customer details with the child table related and displayed by datagrid. I have a field in the child table for images and I have figured out how to store and retrieve images to the db. I am using the datagrid.rowheadermouseclick event to reload the picturebox on the main form as I click down the child table datagrid. Now I need to be able to click the bindingnavigator, go to the next record and have the program reload the image for the next child record. The problem is I'm trying to use an event from either the datagrid or bindingnavigator to reload the picturebox in the child table after moving to the next record, but all of the events I am trying are firing before the next record is moved to and therefor the logic I'm using to retrieve the image from the db is not working.
Anyone with an idea on how to move to the next record and then run my logic to populate the picturebox? What events might I use that fire after the next record has been populated? I know this is probably not that hard, but I have been racking my brain all day now.
I have this database table called people[code]...
View 3 RepliesI know how to display or manipulate (add,delete,update,search) records using the OleDbDataReader and OleDbCommand class. But I'm clueless in getting the total record on a query.
View 1 RepliesI am trying to figure out how to get the max record count before i populate a listview grid. I'm using the Oracle 10g DB and I've tried:
SELECT COUNT(*) as countNum, status, date, theTitle, theMessage, date2 " & _
"FROM blah blah...
messagebox.show(dr(0))
But that makes the SQL query crash. It doesnt seem as though i am about to put anything related to "count" in my query or it will crash so is there any other way i can see how many records it returns other than that?
I've written some code to try some thing. I don't get an error message. However, the record count return " zero". I declare some objects and make a connection. That all works fine. But no records.
Here's the code :
Public Class Form1
Dim vtest As VariantType
Dim cn As ADODB.Connection
Dim rs As ADODB.Recordset
Dim cmd As ADODB.Command
[Code] .....
I am trying to fetch my record count in my following query:
myCommand = New OleDbCommand("SELECT status, date, theTitle,
theMessage, date2, COUNT(*) over () as countNum
FROM Blah blah...[code].....
But it just closes my program. If i comment that out then it populates just fine and doesn't close.What could i do to correct this?
I'm fine with both C# and VB.NET..I have two tables. Authors and Books. It's a one to many relationship, Authors to Books. I'm writing a query to show how many books that each author has.[code]But in the Authors table, there are some authors without any books yet. For example, there two authors, Author D and Author E that have no books yet. I want to write query that includes all authors and number of ther books, even though they don't have any book yet, no record in the Books table yet.
View 1 RepliesI'm very new to linq and I'm trying to come up with a linq query against a dataset that will return a max count value based on grouping records.[code]...
View 1 RepliesI currently have the below code to list all tables in a MS Access Database, what I would like to do is alos COUNT the TOTAL records within each table and display that info in a listview control.
how to get that info.
This is the code I am currently using to get the list of tables from the database:
Dim userTables As DataTable = Nothing
Dim i As Integer
Dim restrictions() As String = New String(3) {}
[Code]....
How to i display how many records that i have in a label on my main form for example if i had 3 table called Cusotmers, Orders, Products
How do i get it to show the total amount of each table on label 1 label 2 label 3?
my table name is "temp", and one of the field is item_id..how can i count how much item_id was added in this table...??is the code "SELECT item_id, COUNT(*) FROM temp GROUP BY item_id"it doesn't work.. i'm using OLEDB connection and can't use sql property
View 8 RepliesAs you all know, If the dataBase requires a numerical value then an error will occur when the user tries to insert the incorrect data type. With the code below after the user types in a value beside an int value type then it will go into an Loop through more than what is needed. How can I apply the same logic but allow the program not to check the 60 rows (I set the row size to 60). I want to break out of it if there are blanks ONLY if a row is blank and not for a black cell, because if the user leaves one cell blank then it would loop through the 'for each' for how many rows that they is. Initially there are 60 rows.
MIS
For Each item As DataGridViewRow In dgvLaser.Rows
If IsNumeric(item.Cells(3)) Then
Exit For
Else
MessageBox.Show("Check Record Count. Numerical values only..!")
End If
Next
I am using vb.net and WPF. In a wpf window I am showing a datagrid in the load event while in the load event itself, I need to count grand total amount from a single datagrid column and add it to a textbox in same page .
My page looks like this:
My DataGrid:
Item Quantity Total
Shirt 2 200
Pant 1 500
Tie - -
Belt 2 100
My Textbox ---> Grand Total amount : - 800
How do I do that if I am counting from a ((Total Column )) DTG
And adding it and showing it in my (( GRAND TOTAL AMOUNT)) TEXTBOX
Protected Sub invokePagination(ByVal table As DataTable)
'CallPagination() As PagingControlDTO
If table.Rows.Count > 0 Then
Me.DataGridPaging1.Visible = True
[code].....
The code which is underlined is to be replaced.Instead of this I want to use column name to get the total count , since it contain the total count.Column Name is "TOTALROWCOUNT"
I have a form in which i need to add column depending on the counts of records in database. For that i need to set column count using code.
View 4 Repliesrecords with filter property gives the correct recordcount but it displays few records when bind to the mshflexgrid
View 1 RepliesDim RsCheck As Integer
Dim SelectedRecord As String
Dim StrSql As String
Dim Cn As New ADODB.Connection
[code]....
I Have 1000 Records in My DataGrid!
DataGrid has 3 columns {Code,F Name , L Name}
How to do Find a Record in my DataGrid and Select or bookmard ?for Example:
Search : F Name =Jack
My code is: But I want to use like operator.
Sub Find2
Dim foundpos = bs.Find("myid", txtSearch.Text)
If foundpos > -1 Then'if record is found
bs.Position = foundpos ' setting grid current itemElse
MsgBox("not found")
[Code] .....
I am writing a programme that copies the selected row in one datagridview to a new row in a second datagridview when a button is clicked. the best way to go about this? This is my code thus far:
[Code]....
I'm making a project which is gonna store data into a database..
how to delete a single record in a datagrid..
I have a column for deletion..
here is my code..
If dtgItem.Item(e.ColumnIndex, e.RowIndex).Value = "Delete" Then
Dim resp As VariantType
resp = MessageBox.Show("Are you sure you want to delete this Item?",
[Code].....
I have a form with a datagrid, few buttons, and textboxes. I can add the new record in data table and can display in datagrid. The problem is that... the new record which i have inserted in data table is been displayed at the last row of datagrid which i am having trouble finding it out whether the data is been inserted or not.
1. my question is how to display new record / row inserted in datagrid at the first, so that i can see the data is been added.
2. how to display numbers of record which i have seleted in data grid e.g. 1 of 20 when i select first row and 2 of 20 when i select second row. i can display only total number of records of datagrid.
I am trying to do a record search feature in my datagrid, but I can't find any reference for this. What I want to do is I can search any of the row that contain the text that type in TextBox1 by clink on Button1. I am using VB2008 and the datagrid is connect to access.
View 1 RepliesI am trying to update a table based on row selected in a grid (C1TrueDBGrid1.Columns(1).Value), but I am getting the following error:
Update unable to find TableMapping['Table'] or Data Table 'Table'
Code:
Dim ConnectionString As String = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=/DataDirectory/AOPT2002org.mdb;Persist Security Info=True;Jet OLEDB:Database Password=testaopupdate" Dim objConnection As New
[Code]....
I'm encountering a problem on how to delete a selected row in a datagrid. This error occurs, "Missing the DataColumn 'ID' for the SourceColumn 'ID'."[codde]
View 3 Repliesi have this addform to add, edit and delete records in marriage tab, baptism tab and so on and before we can see this form theres another form the emform my question is how am i supposed to code the "view this event" button, that when i click on the selected row my addform will show up with the row i click on the view button is selected/highlighted on this addform (btw i bind all the textbox in my add form on the columns of my marrige table)
View 10 RepliesHow can i delete record from datagrid in vb.net using checkbox i.e when i click on checkbox it should display conformation message.
View 7 Replies