Excel Connection String for ADO.NET

You will first need a connection string to connect to the Excel Workbook, which would be the following:

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This says the spreadsheet is located in the current directory and called Book1.xls, and the first row is a header row containing the names of the columns.

Read Excel Spreadsheet using ADO.NET and DbDataReader

Once you have the connection string all normal ADO.NET coding applies. Here is some sample code that reads each row of the excel worksheet using DbDataReader. You don’t have to use the DbProviderFactory Classes. I thought I would show it just for kicks.

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Read Excel Spreadsheet using ADO.NET and DataSet

Here is another example of reading an Excel spreadsheet using ADO.NET and a DataSet.

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I was binding to the Janus GridEx Control, which is why you see gridEX1 above. You could easily replace those 2 lines with

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Inserting a Row into Excel Using ADO.NET

Here I will add a 4th city, Tampa, to the list of cities in Florida. This inserts it right into the Excel Worksheet as you would expect.

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Updating Excel Using ADO.NET

Let’s modify the name of the first city from Bradenton to Venice in the Excel Spreadsheet using ADO.NET:

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It is just too cool that we can use ADO.NET and the OleDb Managed Data Provider in the .NET Framework to insert, update, and delete information in an Excel Spreadsheet like it was a database.