User-1160955539 posted
Hello, I am writing a code for uploading an excel file and displaying the same in gridview using ado.net. But don't know how to update the access database with unique data from gridview , which is not already present in database, simultaneously with the
update. My code is as follows:
using System.Data;
using System.Data.OleDb;
using System.IO;
using System.Configuration;
public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
protected void btnUpload_Click(object sender, EventArgs e)
{
if (FileUpload1.HasFile)
{
string FileName = Path.GetFileName(FileUpload1.PostedFile.FileName);
string Extension = Path.GetExtension(FileUpload1.PostedFile.FileName);
string FolderPath = ConfigurationManager.AppSettings["FolderPath"];
string FilePath = Server.MapPath(FolderPath + FileName);
FileUpload1.SaveAs(FilePath);
Import_To_Grid(FilePath, Extension, rbHDR.SelectedItem.Text);
}
}
private void Import_To_Grid(string FilePath, string Extension, string isHDR)
{
string conStr = "";
switch (Extension)
{
case ".xls": //Excel 97-03
conStr = ConfigurationManager.ConnectionStrings["Excel03ConString"].ConnectionString;
break;
case ".xlsx": //Excel 07
conStr = ConfigurationManager.ConnectionStrings["Excel07ConString"].ConnectionString;
break;
}
conStr = String.Format(conStr, FilePath, isHDR);
OleDbConnection connExcel = new OleDbConnection(conStr);
OleDbCommand cmdExcel = new OleDbCommand();
OleDbDataAdapter oda = new OleDbDataAdapter();
DataTable dt = new DataTable();
cmdExcel.Connection = connExcel;
//Get the name of First Sheet
connExcel.Open();
DataTable dtExcelSchema;
dtExcelSchema = connExcel.GetOleDbSchemaTable(OleDbSchemaGuid.Tables, null);
string SheetName = dtExcelSchema.Rows[0]["TABLE_NAME"].ToString();
connExcel.Close();
//Read Data from First Sheet
connExcel.Open();
cmdExcel.CommandText = "SELECT * From [" + SheetName + "]";
oda.SelectCommand = cmdExcel;
oda.Fill(dt);
connExcel.Close();
//Bind Data to GridView
GridView1.Caption = Path.GetFileName(FilePath);
GridView1.DataSource = dt;
GridView1.DataBind();
}
protected void PageIndexChanging(object sender, GridViewPageEventArgs e)
{
string FolderPath = ConfigurationManager.AppSettings["FolderPath"];
string FileName = GridView1.Caption;
string Extension = Path.GetExtension(FileName);
string FilePath = Server.MapPath(FolderPath + FileName);
Import_To_Grid(FilePath, Extension, rbHDR.SelectedItem.Text);
GridView1.PageIndex = e.NewPageIndex;
GridView1.DataBind();
}
If anyone can provide code to simultaneously modify the access database, that will be of much help.
