Read Excel File Into DataSet in ASP.net Using C# - CodeProject

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How to read Excel file datainto a DataSet in ASP.NETusing C#.

Type Tip/Trick

Licence CPOL

First Posted 14 Dec 2012

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Read Excel File into DataSet inASP.NET Using C#By Mannava Siva Aditya, 14 Dec 2012

IntroductionIn this example I will explain how to read Excel file data into aDataSet in ASP.NET using C#.

I have created an Excel file which contains the Slno, FirstName,LastName and Location which is shown below.

We would be putting all the data into the grid view and withthe help of filter with the dropdown list box, we would filterthe Slno and display accordingly, else display all the cellvalues in the grid.

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Read Excel File into DataSet in ASP.NET Using C# - CodeProject http://www.codeproject.com/Tips/509179/Read-Excel-File-into-DataSe...

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<asp:DropDownList ID="ddlSlno" runat="server" OnSelectedIndexChanged="ddlSlno_SelectedIndexChanged" AutoPostBack="true" AppendDataBoundItems="True"><asp:ListItem Selected="True" Value="Select">- Select -</asp:ListItem></asp:DropDownList><asp:GridView ID="grvData" runat="server"></asp:GridView>

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OleDbConnection oledbConn;protected void Page_Load(object sender, EventArgs e){ if (!IsPostBack) { GenerateExcelData("Select"); }} protected void ddlSlno_SelectedIndexChanged(object sender, EventArgs e){ GenerateExcelData(ddlSlno.SelectedValue);} private void GenerateExcelData(string SlnoAbbreviation){ // need to pass relative path after deploying on server string path = System.IO.Path.GetFullPath(@"C:\InformationNew.xls"); /* connection string to work with excel file. HDR=Yes - indicates that the first row contains columnnames, not data. HDR=No - indicates the opposite. "IMEX=1;" tells the driver to always read "intermixed" (numbers, dates, strings etc) data columns as text. Note that this option might affect excel sheet write access negative. */ oledbConn = new OleDbConnection(@"Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + path + ";Extended Properties='Excel 12.0;HDR=YES;IMEX=1;';"); oledbConn.Open(); OleDbCommand cmd = new OleDbCommand(); ; OleDbDataAdapter oleda = new OleDbDataAdapter(); DataSet ds = new DataSet(); // selecting distict list of Slno cmd.Connection = oledbConn; cmd.CommandType = CommandType.Text; cmd.CommandText = "SELECT distinct([Slno]) FROM [Sheet1$]"; oleda = new OleDbDataAdapter(cmd); oleda.Fill(ds, "dsSlno"); // passing list of states to drop-down list ddlSlno.DataSource = ds.Tables["dsSlno"].DefaultView; ddlSlno.DataTextField = "Slno"; ddlSlno.DataValueField = "Slno"; ddlSlno.DataBind();


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// by default we will show form data for all states but if any state is selected then show data accordingly if (!String.IsNullOrEmpty(SlnoAbbreviation) && SlnoAbbreviation != "Select") { cmd.CommandText = "SELECT [Slno],[FirstName],[LastName],[Location]" + " FROM [Sheet1$] where [Slno]= @Slno_Abbreviation"; cmd.Parameters.AddWithValue("Slno_Abbreviation", SlnoAbbreviation); } else { cmd.CommandText = "SELECT [Slno],[FirstName],[LastName],[Location] FROM [Sheet1$]"; } oleda = new OleDbDataAdapter(cmd); oleda.Fill(ds); // binding form data with grid view grvData.DataSource = ds.Tables[0].DefaultView; grvData.DataBind();}// need to catch possible exceptionscatch (Exception ex){}finally{ oledbConn.Close();}}// close of method GemerateExceLData

LicenseThis article, along with any associated source code and files, islicensed under The Code Project Open License (CPOL)

About the Author

Mannava SivaAdityaWeb Developer

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I am a 28 year old software web developer from Hyderabad,India. I have been working since approximately age 25. Whereas in IT Development industry since 27. I am MicrosoftCertified Technology Specialist.

I have taught myself in development, beginning withMicrosoft's technologies ASP.NET, Approximately 3 years ago, I


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was given an opportunity to work as a freelance in the techfield. Now I am working as a web developer where my rolesmake me purely in web based technology solutions whichmanage and control access to applications and patientinformation stored in legacy systems, client-serverapplications. I too had an opportunity to train some IT professionals withtechnical skills in development area. Which became mypassion. I have worked on various .NET framework versions(2.0 , 3.5,4.0) and have been learning every new technology beingintroduced. Currently, I am looking forward to working in R &D in .Net to create distributed, reusable applications.

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Alireza_1362 12 May '13 - 6:54

Good Job

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JamesPChadwick 21 Dec '12 - 10:39

Why not make use of the Interop Assemblies for Office?

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My voteof 1


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xx_Sandman_xx 17 Dec '12 - 10:28

Do you have Excel installed on your web server or areyou installing something like Access Database Engine?http://www.microsoft.com/en-us/download/details.aspx?id=23734[^] Did you run into any field limitations? My impression isthat there is a 255 character limit AND the maximumlength of the first 8 rows in a column sets the maximumfor the document. So if row 9 has 255 characters onlythe initial max length is available...

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Mannava Siva Aditya 17 Dec '12 - 19:58

newOleDbConnection(@"Provider=Microsoft.ACE.OLEDB.12.0;DataSource=" +path + ";Extended Properties='Excel 12.0;HDR=YES;IMEX=1;';");This it self is the provider for microsoft excel. And comming tofield limitation it will read what ever data is been entered!


xx_Sandman_xx 18 Dec '12 - 12:05

In general this is a good start but it is incompleteand the responses to my questions are incorrect.Perhaps you missunderstood my question aboutthe ACE provider but any provider needs to havea driver installed on the computer. I'm not surehow you think this all works but the provider isnot part of .net. In search of some reference

Wheredo youget theprovider?

Re:Wheredo youget theprovider?

Re:Wheredo youget theprovider?


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material outside of my statements I discovered avery complete article here.http://yoursandmyideas.wordpress.com/2011/02/05/how-to-read-or-write-excel-file-using-ace-oledb-data-provider/[^]In the future I would suggest if you don'tunderstand the question or know the answer notto post guess as fact.


Carsten V2.0 14 Dec '12 - 22:40

Very useful tipp!Thanks for sharing... If I am right your connection-string supports onlyXLSX-documents. I think it would be helpful to post thestring for older versions, too.


Mannava Siva Aditya 16 Dec '12 - 19:27

It would support both xls and xlsx. as we had takenthe latest one.


Carsten V2.0 16 Dec '12 - 22:05

Ok, sorry!It was my bad... Nevertheless a very useful tipp!


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Read Excel File Into DataSet in ASP.net Using C# - CodeProject