Insert data in SQL server through excel file using SQL query

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Hello can any one help me i am develop Asp.Net application where i want to insert data in data base through excel sheet.For this i am using the following code that is work nice.but its insert data directly in to the data base.i want to add SQL query that specifies those data that i am insert..but i don't know where and how i use SQL query that insert data in database

ASP.NET

<body>
    <form id="form1" runat="server">
    <div>
    <asp:FileUpload ID="FileUpload1" runat="server" />
    <asp:Button Text="Upload" OnClick = "Upload" runat="server" />
    <asp:Label Text="" ID="label1" runat="server" />
    
  </div>
    </form>
</body>

Code for button

C#

protected void Upload(object sender, EventArgs e)
        {
            if (FileUpload1.HasFile)
            {
                string path = string.Concat((Server.MapPath("~/temp/" + FileUpload1.FileName)));
                FileUpload1.PostedFile.SaveAs(path);
                OleDbConnection oleDbcon = new OleDbConnection("Provider=Microsoft.Ace.OLEDB.12.0;Data Source ="+path+";Extended Properties=Excel 12.0;");
                OleDbCommand cmd = new OleDbCommand("select * from [Sheet1$]", oleDbcon);
                OleDbDataAdapter objAdapter1 = new OleDbDataAdapter(cmd);
                oleDbcon.Open();
                DbDataReader dr = cmd.ExecuteReader();
                string con_str =@"Data Source =.\SQLEXPRESS; Initial Catalog = CR_SYS; Integrated Security = True";
                SqlBulkCopy bulkInsert = new SqlBulkCopy(con_str);

//this code insert data in database directly but i want sql query fro this to add data in StudentBulk table
                bulkInsert.DestinationTableName = "StudentBulk";


                bulkInsert.WriteToServer(dr);
                oleDbcon.Close();
                Array.ForEach(Directory.GetFiles((Server.MapPath("~/temp/"))), File.Delete);
                label1.ForeColor = Color.Blue;
                label1.Text = "Succesful";
            }
            else
            {
                label1.ForeColor = Color.Red;
                label1.Text = "slelct the file";

            }
        }

What I have tried:

I want to add a sql query for insertion

Posted 28-Jul-16 2:16am

Member 11306487

Updated 31-Jul-16 19:11pm

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2 solutions

Solution 1

SqlBulkCopy just do through loop method, each time a new row data is inserted in sql through SQL Insert query nothing else.

Posted 28-Jul-16 22:58pm

The Praveen Singh

Comments

Member 11306487 29-Jul-16 8:18am

yes i understand your answer but i don't do it because i am new in asp.net and c#.and this code was copied form some video tutorial.but this can't meet my requirements.can you please show me how i do loop method for sql query

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The Praveen Singh · Accepted Answer · 2016-07-31T19:11:00

In that case:-
First take Excel sheet value in a datatable like

C#

OleDbCommand cmd = new OleDbCommand("SELECT * FROM [Sheet1$]", OleDbcon);
                OleDbDataAdapter objAdapter1 = new OleDbDataAdapter(cmd);
                ds = new DataSet();
                objAdapter1.Fill(ds);
                Dt = ds.Tables[0];

After that using for loop you can achieve your goal like as

C#

private void InsertData()
    {
        for (int i = 0; i < Dt.Rows.Count; i++)
        {
            DataRow row = Dt.Rows[i];
            int columnCount = Dt.Columns.Count;
            string[] columns = new string[columnCount];
            for (int j = 0; j < columnCount; j++)
            {
                columns[j] = row[j].ToString();
            }
            conn.Open();
            string sql = "INSERT INTO TestTable(A,B,C,D,E)";
            sql += "VALUES('" + columns[0] + "','" + columns[1] + "','" + columns[2] + "',Convert(varchar(10),'" + columns[3] + "',103),'" + columns[4] + "')";
            SqlCommand cmd = new SqlCommand(sql, conn);
 
            cmd.ExecuteNonQuery();
            conn.Close();
        }
    }

Hope this will be your answer.