Could not load file or assembly csla, version2.PublicKeyToken93be5fdc093e4c30or one of its dependencies.The database recognizes 1,746,000 software titles and delivers updates for your software including minor upgrades.Every once in awhile, you come across this exception System.NullReferenceException Object reference not set to an instance of an object.Read and Import Excel data to Data.Table using Open.Xml in ASP. Net with C and VB.Net. In this article I will explain with an example, how to read and import Excel file Excel sheet data to Data.Table using Open.Xml in ASP. Net with C and VB.Net. Download Document.Format. Open. Xml and Closed.Xml Libraries. You can download the libraries using the following download locations.Note You will need to install the Open.Xml SDK 2. 0 in your Windows Operating System.HTML Markup. The following HTML Markup consists of an ASP.Net File. Upload control, a Button and a Grid.View. lt asp File.Upload. IDFile. Upload.Button. IDbtn. ImportrunatserverTextImportOn.ClickImport. Excel lt hr lt asp Grid.View. IDGrid. View.Grid. View Namespaces.You will need to import the following namespaces.Cusing System. IO using System.Data using System.Collections. Generic using Document.Format. Open. Xml.Packaging using Document.Format. Open. Xml.Update cell data in an Excel file using OLEDB Without using Excel Object we can insert, edit, delete, select etc.Excel file using OLEDB.C Datagridview Edit Cell Update Database With Ajax' title='C Datagridview Edit Cell Update Database With Ajax' />Spreadsheet VB.Net. Imports System.IOImports System.Data. Imports System.Collections. Generic.Imports Document.Format. Open. Xml.Packaging. Imports Document.Format. Open. Xml.Spreadsheet. Importing Excel data to Data.Table using Open.Table-Update-Example-2.png' alt='C Datagridview Edit Cell Update Database With Ajax' title='C Datagridview Edit Cell Update Database With Ajax' />Xml in ASP.Net When the Import Button is clicked, the following event handler is clicked.First the uploaded Excel file is saved to a folder named Files and then it is opened and read using Open.Xml Spread. Sheet.Document class object.Then the instance of the first Sheet is determined and all the rows present in the Sheet are fetched.Finally a loop is executed over the fetched rows and a Data.Table is populated which is then bound to the Grid.View. Cprotectedvoid Import.Excelobject sender, Event.Args e Save the uploaded Excel file.Path Server. Map.PathFiles Path. Get.File. NameFile. Upload.Posted. File. File.Name File. Upload.Save. Asfile. Path Open the Excel file in Read Mode using Open.Xml. using Spreadsheet.Document doc Spreadsheet.Document. Openfile.Path, false Read the first Sheet from Excel file.Sheet sheet doc. Workbook.Part. Workbook. Sheets.Get. First. Childlt Sheet Get the Worksheet instance.Worksheet worksheet doc.Workbook. Part. Get.Part. By. Idsheet.Id. Value as. Worksheet.Part. Worksheet Fetch all the rows present in the Worksheet.IEnumerablelt Row rows worksheet.Get. First. Childlt Sheet.Data. Descendantslt Row Create a new Data.Table. Data.Table dt new. Data.Table Loop through the Worksheet rows.Row row in rows Use the first row to add columns to Data.Table. if row.Row. Index. Value 1 foreach Cell cell in row.Descendantslt Cell dt.Columns. AddGet. Valuedoc, cell else Add rows to Data.Table. dt.Rows. Add int i 0 foreach Cell cell in row.Descendantslt Cell dt.Rowsdt. Rows. Count 1i Get.Valuedoc, cell i Grid.View. 1. Data. Source dt Grid.View. 1. Data. Bind privatestring Get.ValueSpreadsheet.Document doc, Cell cell string value cell.Cell. Value. Inner.Text if cell. Data.Type null cell. Data.Type. Value Cell.Values. Shared. String return doc.Workbook. Part. Shared.String. Table. Part.Shared. String. Table.Child. Elements. Get.Itemint. Parsevalue.Inner. Text return value VB.Net. Protected. Sub Import.Excelsender As. Object, e As.Event. Args Save the uploaded Excel file.Dim file. Path As.String Server. Map.PathFiles Path. Get.File. NameFile. Upload.Posted. File. File.Name File. Upload.Save. Asfile. Path Open the Excel file in Read Mode using Open.Xml. Using doc As.Spreadsheet. Document Spreadsheet.Document. Openfile.Path, False Read the first Sheet from Excel file.Dim sheet As. Sheet doc.Workbook. Part. Workbook.Sheets. Get. First.ChildOf. Sheet Get the Worksheet instance.Dim worksheet As.Worksheet Try. Castdoc.Workbook. Part. Get.Part. By. Idsheet.Id. Value, Worksheet.Part. Worksheet Fetch all the rows present in the Worksheet.Dim rows As. IEnumerableOf.Row worksheet. Get.First. ChildOf. Sheet.Data. DescendantsOf.Row Create a new Data.Table. Dim dt As.New. Data. Table Loop through the Worksheet rows.For. Each row As.Row. In rows Use the first row to add columns to Data.Table. If row.Row. Index. Value 1 Then For.Each cell As. Cell.Inrow. DescendantsOf.Cell dt.Columns. AddGet. Valuedoc, cell Next Else Add rows to Data.Table. dt.Rows. Add Dim i As.Integer 0 For.Each cell As. Cell.Inrow. DescendantsOf.Cell dt.Rowsdt. Rows. Count 1i Get.Valuedoc, cell i 1 Next End.If Next Grid.View. 1. Data. Source dt Grid.View. 1. Data. Bind End.Using. End. Sub. Private.Function Get. Valuedoc As.Spreadsheet. Document, cell As.Cell As. String Dim value As.String cell. Cell.Value. Inner. Text Ifcell.Data. Type Is. Not.Nothing. And. Also cell.Data. Type. Value Cell.Values. Shared. String Then Return doc.Workbook. Part. Shared.String. Table. Part.Shared. String. Table.Child. Elements. Get.ItemInteger. Parsevalue.Inner. Text End.If Return value.End. Function. Screenshots. How To Write A Signature In Microsoft Word . The Excel File. Grid.View displaying Excel data.Download Update. Star Update.Star. Download the.Double click the downloaded file.Update. Star is compatible with Windows platforms.Update. Star has been tested to meet all of the technical requirements to be compatible with.Windows 1. 0, 8. 1, Windows 8, Windows 7, Windows Vista, Windows Server 2.Windows. XP, 3. 2 bit and 6.Simply double click the downloaded file to install it.Update. Star Free and Update.Star Premium come with the same installer.Update. Star includes support for many languages such as English, German, French, Italian, Hungarian, Russian and many more.You can choose your language settings from within the program.
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