i have code to load data from database to DataGridView.
VB.NET
Imports System.DataImports System.Data.OleDb Public Class Form1 Dim dt As New DataTable Private Sub Form1_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load Me.WindowState = FormWindowState.Maximized End Sub Sub setData()
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easy way to simply load the data from database into a datagridview with one of the columns being a comboboxcolumn. Apparently there is no selectedvalue, selectedindex or value as in a combobox to return the combobox value. What I need is to verify if the database value is 'true' and if it is then I need to set the comboboxcolumn with a specific value.
Ex:
if ds.tables(0).rows(0)("flag") = "true" then
datagridcolumn.selectedvalue = 1
else
datagridcolumn.selectedvalue = 0
end if
My code is working fine I just need a way to reset the DataAdapter1 into 0 (like reset) So if the user hit the button search 2 times to shows up only 1 time the elements of database "product".. If i used the code below and hit 2 times the button the DataGridView show 10 product for examplat the first time and +10 for the second, a total of 20 products, even if I search then edit a product and search again it's fixed the previous table and prints again 2 times the table....
DataAdapter1.SelectCommand = Sql2 ''database load
DataAdapter1.Fill(ds2, "products") ''dataset
DataGridView1.DataSource = ds2
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I'm using Excel as a database backend to load into a datagridview.
This is how I connect and bind to the dgv:
vb.net Dim sFileName = filelocation & "checks.xls"
Dim connectionStringTemplate As String = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source={0};Extended Properties=""Excel 12.0 Xml;HDR=Yes;IMEX=1"""
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It connects and populates fine. I have a button for the user to "refresh" the datagridview. I cannot get it to correctly refill the dgv. I have tried setting the bindsource.datasource to Nothing along with the datagridview datasource, but I get an error that brings up the Visual Studio debugger with no real error message...
I have a password protected database (.mdb) which has 2 different tables, and a DataGridView What I want to do is:
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you would think that this would be simple, but with some sample code i found i could only get it to load and not save, or it would be written for a datagrid and not a datagridview.
I am loading data from query into a dataadapter and then into a dataset.the datadridview datasource is the set to the dataset.but it takes too long to load the data into the datagridview.
View 2 RepliesI create more then 10 columns in Access 2010 and I have a lot of rows. I write code already to load data to my datagridview, but I want to know to how to load data with progressbar untill finish. *If loading data does not finish the progressbar does not finish,too.
View 8 RepliesI was wondering if there is any way to load data from excel sheet into a datagridview in VB2008 dynamically. I have looked at few data connection codes but all of them involve the excel sheet and thw workbook name. Is there anyway that I enter the excel sheet name in a inputbox and the data from excel loads into datagridview without hardcoding the sheet name. I know data can be imported using the below code, here the programmer has to mention the excel workbook name, path and sheet name. [code]I am developing a program to perform some calculations and my data is in a number of excel workbooks and worksheets. I need to be able to bring the data from these excel sheets into the datagridview to perform calculations. So I was thinking if I could mention the excel sheet name in the GUI and then accordingly the data from that particular sheet would be loaded into the datagridview to perform calculations.
View 5 RepliesI have a datagridview which have 5 columns. The name of the columns are T,C,F,S,H.
I have a text file which contain lines like this.
T240C3.175F012S27H2000
T239C0.95F034S55H1000
T236C1.2F029S48H2000
T234C1.6F029S48H2000
So i want to display this data in datagried view. I must display the number beside T to T column, the number beside C to C column and so on. It should only display number in the respective column. It should not display the T,C and so on.
I have the option to save the contents of the listview that was saved into text file.now i would like to load the text file into datagridview in vb.net but i have no idea how to do it as this is my first time in doing it and i had googled around but couldn't find the information i needed.
View 11 Repliesim fairly new to databases in vb.net and i have just learned how to use datagridview. im gonna show some of my code for the connection and datagridview display
Public Class Form1
Dim con As New OleDb.OleDbConnection
Dim dbProvider As String[code].....
i want to display in a textfield the first name based on where is the pointer is positioned after i clicked Button1, how do i do this?
All I want is to update the selected row data in form1 to another form2
Form1 Objects
Form1 = MainAppForm
DataGridView = DGVMain <= binded
Button = btnUpdate
Form2 Objects
Form2 = frmUpdate
Button = btnSubmit
15 textBoxes = you can see its name in the code below and all of them are data binded
MainAppForm Code
Pass the selectedrow data to form2 (frmUpdate)
Private Sub btnUpdateDouble_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnUpdate.Click
If DGVMain.SelectedRows.Count = 1 Then
Try
frmUpdate.ItemIDTextBox.Text = DGVMain.CurrentRow.Cells(0).Value.ToString()
frmUpdate.PartTypeTextBox.Text = DGVMain.CurrentRow.Cells(1).Value.ToString()
frmUpdate.PartNameValueTextBox.Text = DGVMain.CurrentRow.Cells(2).Value.ToString()
frmUpdate.PackageTypeTextBox.Text = DGVMain.CurrentRow.Cells(3).Value.ToString()
frmUpdate.QuantityTextBox.Text = DGVMain.CurrentRow.Cells(4).Value.ToString()
frmUpdate.UnitTextBox.Text = DGVMain.CurrentRow.Cells(5).Value.ToString()
frmUpdate.DescriptionTextBox.Text = DGVMain.CurrentRow.Cells(6).Value.ToString()
frmUpdate.LocationTextBox.Text = DGVMain.CurrentRow.Cells(7).Value.ToString()
frmUpdate.ProjectBoardTextBox.Text = DGVMain.CurrentRow.Cells(8).Value.ToString()
frmUpdate.CommentsTextBox.Text = DGVMain.CurrentRow.Cells(9).Value.ToString()
frmUpdate.OrderCodeTextBox.Text = DGVMain.CurrentRow.Cells(10).Value.ToString()
frmUpdate.CurrencyTextBox.Text = DGVMain.CurrentRow.Cells(11).Value.ToString()
frmUpdate.UnitPriceTextBox.Text = DGVMain.CurrentRow.Cells(12).Value.ToString()
frmUpdate.SupplierTextBox.Text = DGVMain.CurrentRow.Cells(13).Value.ToString()
frmUpdate.ManufacturerTextBox.Text = DGVMain.CurrentRow.Cells(14).Value.ToString()
frmUpdate.Show()
Catch ex As Exception
System.Windows.Forms.MessageBox.Show(ex.Message)
End Try
ElseIf DGVMain.SelectedRows.Count = 0 Then
MsgBox("Please select one item to update!", MsgBoxStyle.Information, "Update")
Else
MsgBox("Updating multiple Items is not allowed!", MsgBoxStyle.Information, "Update")
End If
End Sub
Form2 Code
I want to update the data by this code, but it refresh only the data in Form1
Private Sub btnSubmit_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnSubmit.Click
Me.Validate()
Me.SparePartsBindingSource.EndEdit()
Me.SparePartsTableAdapter.Update(Me.InventoryDBDataSet.SpareParts)
'Refresh
MainAppForm.SparePartsTableAdapter.Fill(MainAppForm.InventoryDBDataSet.SpareParts)
End Sub
No problem in updating the data if I put the code below in Form2 load event
Me.SparePartsTableAdapter.Fill(InventoryDBDataSet.SpareParts)
but the problem is, it will refresh all the data in the Form2, and my code in Form1 becomes useless.
Thanks in advance!
I'm following advice to load data to a DataTable, binding to a BindingSource then a DataGridView. But some exzamples I've found use a DataAdapter, not a DataTable. [code]
View 3 Repliesregarding the DataGridView Checkbox.. I have two Forms, The 1st one has a datagridview..but in order to load the data to form1 datagridview, i need to open another form w/c also has a datagridview w/checkboxes on it.. I need to select a data in the form2 datagridview w/the use of checkbox..when i select an item..then press the ok button, the checked checkbox with the info corresponds to the data i selected will appear in the form1 datagridview. I have done this and works fine, but when i select two data or when i checked two items on the form2 datagridview.. only one info is added on the form1 datagridview.. here is my
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1) How can i load data from Text file to DatagridView.I Want it because i'm making a lister. And when i load a data from text file, i want to edit rows. And this calling the second question.
2) How can i save data, Datagrid to Text file.
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I would like to put the items in my database to a textbox
Public Class Form1
Public cn As New OleDb.OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" & My.Application.Info.DirectoryPath & "\dbase.mdb")
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I have a DataGridView that I'd like to load with data that I'm retrieving from a SQLDataReader running in a background worker as the data comes in (it's a query that takes a long time). My goal is for the user experience to be similar to searching for a file in Windows where the results appear in the list as they come in and you can still interact with the window.
I have it working with a background worker and data reader and I'm trying to add the row from the SQLDataReader.Read through using the BackgroundWorker.ReportProgress method. Everything technically works but the flicker is crazy and the form is unusable (probably not because the GUI thread is blocked but just because there's so much going on...) How do I make loading the datagridview "smooth"?
I have searched the web and this site for an answer but have not been able to solve this problem.I am not able to place a flashing cursor in a specified cell of a data bound DataGridView on Form_Load.My test project consists of a single Visual Basic 2008 form with a database created in Microsoft SQL Express 2005 using the Add New Data Source in the Data Sources window.The database has one table consisting of 2 columns.Column 1 being the primary key with Identity Specification set to On.The second column is a VarChar50.The DataGridView was placed on the form by dragging it from the Data Sources window thereby creating the Binding Navigator and the Private_Sub Form_Load code.I have added the code that should put the cursor where I want it.[code]
View 2 RepliesI build my project and i got some problems. First i want to print barcode for books(toolstripmenu item). but i cant. here's the code that i found:
[code..]
second problem is printing again. i want to print my MS ACCESS .mdb from child datagridview's records.
third one i want to save and load(with dialogs) my database from main form to child forms' datagridview.and the last one is help provider. i prepare my own .htm help file, when press F1 it opens. but i dont know how to call provider to toolstripmenuitem and help provider keep my computer's path so when i call provider another computer, the programme cant find the path.
I have a form named "Form1".. when this form load it takes few seconds to load all data from database to complete. I want to create another form pop up on the Form1 load_event to prevent user to see the page hanging there.
How can load a new form example frmLoading on a form load event then after the form loading everything data complete from database, only unload the frmLoading...?
I have a datagrid and set of collection of columns for the datagrid. I have added cloumnname and headertext using column collections in design time. I have made false of autogenerated column. I was unable to load the data in datagrid from datatable. If i remove the collection and add bind data in datagrid means working fine but not for the column collections.VB.net windows application.
View 2 Repliessample code or project on how to load a data of a particular table in access database in to a data grid view
View 5 RepliesI'm working with a form that has five combo boxs, when the form loads it goes to the modQuotations where there is a public sub that loads the comboboxs with data from a database but it after its done loading the form there is nothing in the combo boxs. [code]..
View 8 RepliesHow to load data from database table and display in datagrid in VB.NET? I know how it is in C#. I am not familiar with vb.net.
View 1 RepliesI have three tables in SQL server which I would like to show and access on a form. Table 1 contains account data, address, contact details etc. Table two contains data attached to a Person, tel no , Mobile no, Email etc. Table three contains details on what awards the person holds, i.e. one person can hold several awards.
Therefore I have a one many relationship between the first two tables and a one many relationship between the second two tables. This is set up in SQL
The first two tables are shown on a form, table 1 via a set of text boxes, table 2 via a datagrid control.
I would like the functionality whereby I could select a row in the datagrid showing the persons name and find the Persons_ID number then use that as a filter to a second datagrid view so that only the selected persons awards show in the datagrid.
I have created an windows application which stores it data in a database. What I would like to know is how do I access the tables in the dataqbase and transfer the data in them into textboxes on the forms in my application. I can connect to the database and view the tables, but I have'nt got any idea how to get the data from the fields in the tables into the appropriate textboes on the application forms.
View 2 RepliesI must have inadvertly messed up my data connection but not sure how to fix it. when I check the table adapters I can view data but when I load the app I get these errors and no data loads, how can I look at this log and make sense of how to fix this?
************** Exception Text **************
System.Configuration.ConfigurationErrorsException: Configuration system failed to initialize ---> System.Configuration.ConfigurationErrorsException: Only one <configSections> element allowed per config file and if present must be the first child of the root <configuration> element. (C:BungeAppsBunge Post InstallerinDebugBunge Post Installer.exe.Config line 7)
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I execute a stored procedure which updates data. Is there a way to refresh the data in a datagridview to match the database's data.
View 9 RepliesThis is the code that i did to fetch data from the database and filling it to the combobox dropdown list at the form load event:
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In a DataGridview i want to show nearly 50,00,000 records. After data binding to the datagridview, I want to change some Values in some columns in each row. So, while Looping after some time i am getting the "System.Out of Memory error". How can i display data without getting this error. Is there any easy way to display large data in a datagridview.
View 1 Replies