How To Load A Datagridview With Data From Excel (dynamically)

Feb 7, 2010

I 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.

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Excel As A Database Backend To Load Into A Datagridview

Mar 8, 2011

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"""

[CODE]...

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...

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Calculations For Data In Datagridview Dynamically Loaded From Access Database

Feb 2, 2010

I have a database that dynamically loads from Access into a datagridview. I have to enter data manually into one column in this datagridview. I need to be able to perform calculations to this data, for example I need to sum the data in this column, sqaure it and substract it from individual sqaures of the data in the cells. I should be able to sum it sum(22,33,44,53,67,23)^2-sum(22^2,33^2,...23^2). The number of columns keep changing depending on the database I choose to load, so I need to code this dynamically too. I am not really a VB person. I did the same in excel using Visual Basic and I am trying to do it in this Visual Basic environment.I built a tool in excel(VBA) that do some statistical calculations and data analysis and I am trying to build the same in Visual Basic.

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Load Data From Excel And Calling By Columns As Fieldname?

Apr 21, 2009

I am having a problem regarding to Importing file from excel to listview. Actually my problem is that my program will let the user define what database he/she want. I know already how to load on my listview from .txt, access, ms sqlserver, but my problem is the user want to open from excel file. Base from his data, the columns contained Contact, address, age,name and only in sheet1. My problem now is that the user want to call his/her excel act like a database. The tablename will be Sheet1 and if he/she want to display the age and name column he/she can view by calling the its columnname. The columname will act as a fieldname. How can I do this upon loading all of this to listview. I have here an example on how i load data from .txt(csv) format but i need an excel on how to load data coming from excel.[code]...

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Load Data Into DataGridView?

Mar 15, 2012

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

[code].....

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Load Data From Database To DataGridView?

Mar 15, 2011

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()

[Code]...

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Load Data Into Datagridview Is Very Slow

May 10, 2011

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.

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Load Data To Datagridview With Progressbar

Mar 12, 2011

I 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.

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Load Data From Text File To Datagridview?

Jul 16, 2009

I 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.

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Load Text File Data Into Datagridview?

Nov 15, 2011

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.

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Datagridview - .net Load Record Data In A Text Field?

Oct 31, 2011

im 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?

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How To Load Data From Form1 Datagridview To Another Form & Update

Jan 30, 2011

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!

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Load Data To DataTable / Binding To A BindingSource Then DataGridView

Jan 19, 2009

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]

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Load The Data From Database Into A Datagridview With One Of The Columns Being A Comboboxcolumn?

Jul 27, 2010

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

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VS 2005 CheckBox - Load The Data To Form Datagridview

Mar 10, 2010

regarding 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

[Code]...

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VS 2008 Load Data From Text File To DatagridView

Aug 20, 2010

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.

[Code]...

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Multithreading - .NET DataGridView Load Data From A Background Worker And SQLDataReader?

Mar 28, 2012

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"?

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Placing Cursor In Data Bound DataGridView On Form Load

May 1, 2012

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]

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Exporting Data From A Datagridview To Excel?

Jul 28, 2010

I am using Visual Studio 2008 and looking for an efficient and hopefully straightforward approach for exporting data from a DataGridView to Excel. If doable, my preference would be to export the data to Excel without instantiating an Excel application. I found some code on the Microsoft support site that is fairly accessible but the example shows how to export just a few pieces of data. Would someone be able to demonstrate how to modify this code to so that it could be used for large amounts of data (for example, data from a DataGridView).

'Establish a connection to the data source.
Dim sConnectionString As String
sConnectionString = "Provider=Microsoft.Jet.OLEDB.4.0;" & _

[code].....

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Import Data From Excel To Datagridview?

Jan 11, 2012

i need to import data from excel sheet to datagridview of my vbapplication.Please help me with code.If

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Datagridview Column Collections - Unable To Load Data In Datagrid From Datatable

Jun 3, 2010

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.

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Copy Data From Excel And Just Paste It Into The DataGridView?

Oct 5, 2009

I have a data-bound DataGridView. I want to know if it is possible to copy data from Excel and just paste it into the DataGridView it, click on the button ... would be to copy the Excel data from clipboard to DataGridView. What I want is to copy two columns from an open excel file to the first two columns in a DataGridView.

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Display Excel Spreadsheet Data In A DataGridView?

May 12, 2010

how to display the data in an excel spreadsheet in a DataGridView?

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Export Data From DataGridView To Excel File?

Jun 8, 2009

i have a form with DataGridView to show table from database. is it possible for me to add a button then when click, the data from the DataGridView will export to a new excel file?? if possible, can teach me how to do it?

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Export Datagridview Data To Excel File?

Jun 6, 2011

am having problem in saving datagridview data to excel file.. i have import excel namespace into my project but it shows

error : Namespace or type specified in the Imports 'class2' doesn't contain any public member or cannot be found. Make sure the namespace or the type is defined and contains at least one public member. Make sure the imported element name doesn't use any aliases.

Imports Excel = Microsoft.Office.Interop.Excel
Dim xlApp As Excel.Application
Dim xlWorkBook As Excel.Workbook

[Code].....

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How To Transfer Data From Unbound Datagridview To Excel

May 5, 2011

Can anyone help me how to transfer the data from the unbound datagridview to excel and from excel to datagridview...ty

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Importing Data From Excel To Datagrid Or Datagridview?

May 5, 2010

I have a problem loading big spreadsheets into a datagridview.

I had a similar code as above that i used and it works great if you have say 10000 cells to populate cell by cell.

How ever moving to 2 mil cells is a different cup of tea, the code took more than 7 minutes to load the data, and although the data was perfect in every way, its too time consuming, i cant get it to work faster so I used the datagrid instead.

The sheets needed to be imported is 350,000 cells plus. I used code that works realy great, does the import into the grid and transfers the data to a datagridview within 15 seconds with little resources which put a smile on my dail :) then i saw something and it dropped ...

see code:

[Code].....

My problem is that whenever there are values below the heading of the cell the datagrid displays (null)

No matter what i do even converting the values in excel to text it does not display the heading of that column.

When i paste other text into the cells below the heading (NOT NUMBERS) it shows the data and heading, Only if the "type" of content is the same does it display both the heading and the text that follows in rows below.

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Retrieve Data From Excel To Fill DataGridView?

May 26, 2010

I encounter problem trying to retrieve Data from Excel to fill DataGridView. The BA specification is to open up Excel Spreadsheet to loop though the row and retrieve by row, column and fill DataGridVew.

These lines of coding generated this error message

If objSheet.Cells(excelRow, 0) = "" Then <-- error Exception From HRESULT : 0x800A03EC
bolFlag = False
End If

[Code].....

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Fill A DataGridView Box With Data From An Excel 2007 Spreadsheet

Apr 6, 2011

I am trying to fill a DataGridView box with data from an Excel2007 spreadsheet. My code below connects to Excel2007 workbook but then errors and gives this error

[Code]....

Where have I gone wrong and how can I fix this, as I want to show the data in the DataGridView and then move it from there into my SQLServer DB?

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VS 2010 Easier Way Of Importing Data From Excel To DataGridView?

Jul 21, 2011

I have imported a set number of rows (17) into a DataGridView but how do im import like for example thousands of rows? Am i suppose to have thousands of code lines to import row by row?! Is there an easier way to import many rows without doing it row by row? Can someone please share with me how to do this i'm trying to learn more about VB programming as i find it quite intresting excuse me if this is something simple as im still a newbie at VB programming this is my code to import the excel rows

Private Sub Btn_Import_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Btn_Import.Click
Dim objExcel As New Excel.Application
Dim objBook As Excel.Workbook = objExcel.Workbooks.Open(excelPathName)
Dim objSheet As Excel.Worksheet = objBook.Worksheets(1)

[Code]...

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