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The ways discussed above were tested in the template[d] code below.

In a previous post: How to create a dynamic pivot table and refresh automatically in excel I demonstrated how to refresh a pivot table when a sheet is activated.

Add a Data Grid View (named excel Data Grid View) to Form1. So at the top of your code add the following two Imports statements: Private Sub Refresh Data() ' Create the connection string to connect to the Microsoft Excel Workbook Dim connection String As String = "Provider=Microsoft. OLEDB.12.0; Data Source=c:\temp\test.xlsx; Extended Properties = ""Excel 12.0 Xml; HDR=YES""" ' Create a standard SELECT SQL statement Dim select Statement As String = "SELECT [First Name], [Last Name], Address, Telephone FROM [Sheet1$]" ' Create a Data Adapter that will be used to populate a Data Table with data Dim adapter As New Ole Db Data Adapter(select Statement, connection String) ' Populate a Data Table Dim excel Data As New Data Table adapter.

Create the test application Fire up your Visual Studio and create a new Windows Forms project.Thus, the main body of your macro can do its work behind the scenes without the necessity of stopping to update the screen.is your source for cost-effective Microsoft Excel training.If we specified HDR=NO then we would get an SQL error as when the Data Adapter attempts to execute the SELECT statement it would have no idea what [First Name] or [Last Name] refers too.I will start with a citation: “I am reading a sheet from an Excel File…This means that the Excel screen can look like it has "gone crazy" while the macro is running.One thing you may want to do with your macro to make it run faster and to prevent distracting flashes on the screen is to turn off screen updating while the macro is running.That is, how to read, write and update data in a Microsoft Excel Worksheet as if it were a database. Well, admittedly, if you are doing any real data processing then you will definitely want to use a proper database, but there are occassions where you already have data in an Excel file that you simply want to read or you may need to store some simple data that you want to pass around making an Excel file a lot easier.To follow this tutorial you will need: Now add some data, preferably a few rows to demonstrate the functionality.I am pooling (with a While loop) the entire worksheet to process each cell …The problem is that it is VERY SLOW because the file is huge… ” This is a known problem: doing things cell by cell in Excel is a slow operation.


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