Read Excel values.

Hi,

In excel if i have 3 columns and n number of rows,I need to loop through excel sheet.

While looping if a Email column value is not present in the table, I should read that entire row Name,Email and Address and save it table.

Then next read next rows subsequently. If Email is present in table I should not insert the value and skip that row.

I have an Excel with following column names as header.

a ) Name b) Email c) Password

In table T1 I have

a) Name

b)Email

c)Password

Excelxcel.Application xlApp;
                Excel.Workbook xlWorkBook;
                Excel.Worksheet xlWorkSheet;
                Excel.Range range;

                string str;
                int rCnt = 0;
                int cCnt = 0;

                xlApp = new Excel.Application();
                xlWorkBook = xlApp.Workbooks.Open("@"C:\\Users\\guhananth\\Documents\\MEDICAL BILLS.xlsx"", 0, true, 5, "", "", true, Microsoft.Office.Interop.Excel.XlPlatform.xlWindows, "\t", false, false, 0, true, 1, 0);
                xlWorkSheet = (Excel.Worksheet)xlWorkBook.Worksheets.get_Item(1);

                range = xlWorkSheet.UsedRange;

                for (rCnt = 0; rCnt <= range.Rows.Count; rCnt++)
                {
                    for (cCnt = 0; cCnt <= range.Columns.Count; cCnt++)
                    {
                        //You have your cell column value here
                        str = (string)(range.Cells[rCnt, cCnt] as Excel.Range).Value2;
                        Response.Write(str);
                        using (SqlConnection conn = new SqlConnection(System.Configuration.ConfigurationManager.ConnectionStrings["YourConnectionStringValue"].ConnectionString))
                        {
                            //Open your connection
                            conn.Open();

                            //Your Select Query
                            //Change this as per your design and provide the tablename and columnname here
                            string selectString = "SELECT COUNT(*) FROM YourtableName WHERE YourIDField = @idfield";

                            //Create Command object
                            SqlCommand myCommand = new SqlCommand(selectString, conn);

                            //Pass your parameter here
                            myCommand.Parameters.AddWithValue("@idfield", str);

                            // Get the Result query
                            var idExists = (Int32)myCommand.ExecuteScalar() > 0;

                            //Check if record exists in table
                            if (!idExists)
                            {
                                    //How to get each column values ans pass to these string
                          string strName,strLast,strGender
                                    SqlCommand cmd1 = new SqlCommand("Insert into YourtableName (first_name,last_name,sex,dob,active) values(@first_name, @last_name,@sex,@dob,@active)", conn);
                                    //Pass values to parameter
                                    cmd1.Parameters.Add("@first_name", SqlDbType.NVarChar).Value = strName;
                                    cmd1.Parameters.Add("@last_name", SqlDbType.NVarChar).Value = strLast;

                                    //Exceute query
                                    cmd1.ExecuteNonQuery();
                                    conn.Close();

                            }
                        }
                    }
                }

Here how to collect each column values into 3 seperate variables Name,Email and Address.

Guha