When update data in excel sheet to more columns not working why

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.NET4.5

I have excel sheet name Allprinting

contain to UserID,UserName,UserNameAR,Country,CountryAR,Member,MemberAR columns

I need to make update data in this excel sheet if client change any data in these

columns (UserID,UserName,UserNameAR,Country,CountryAR,Member,MemberAR)

but bellow code not working for me

so that what is the problem

my code

C#

var fileName = string.Format("{0}\\Book502", Directory.GetCurrentDirectory());
var connection = string.Format("Provider=Microsoft.ACE.OLEDB.12.0;" + "Data Source={0};Mode=ReadWrite;Extended Properties=Excel 12.0 Xml;", fileName);
try
{
System.Data.OleDb.OleDbConnection MyConnection;
System.Data.OleDb.OleDbCommand myCommand = new System.Data.OleDb.OleDbCommand();
string sql = null;
MyConnection = new System.Data.OleDb.OleDbConnection(connection);
                MyConnection.Open();
                myCommand.Connection = MyConnection;
            sql = "Update [AllPrinting$] SET UserName=@UserName and UserNameAR=@UserNameAR and Country=@Country and CountryAR=@CountryAR AND Member=@Member AND MemberAR=@MemberAR WHERE UserID=@UserID";
           
            myCommand.CommandText = sql;
                myCommand.Parameters.AddWithValue("@UserName", textBox2.Text);
                myCommand.Parameters.AddWithValue("@UserID", textBox1.Text);
               myCommand.Parameters.AddWithValue("@UserNameAR", textBox3.Text);
            myCommand.Parameters.AddWithValue("@Country", textBox4.Text);
            myCommand.Parameters.AddWithValue("@CountryAR", textBox5.Text);
            myCommand.Parameters.AddWithValue("@Member", textBox6.Text);
            myCommand.Parameters.AddWithValue("@MemberAR", textBox7.Text);
            myCommand.ExecuteNonQuery();
                MyConnection.Close();
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.ToString());
            }

I can update data in excel sheet if i make update to one column

C#

sql = "Update [AllPrinting$] SET UserName=@UserName and UserNameAR=@UserNameAR WHERE UserID=@UserID";

But update data to more column not working as following :

C#

sql = "Update [AllPrinting$] SET UserName=@UserName and UserNameAR=@UserNameAR and Country=@Country and CountryAR=@CountryAR AND Member=@Member AND MemberAR=@MemberAR WHERE UserID=@UserID";

What I have tried:

when update data in excel sheet to more columns not working why

Posted 31-Jan-17 17:32pm

ahmed_sa

Updated 31-Jan-17 18:19pm

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Suvendu Shekhar Giri · Answer 1 · 2017-01-31T18:19:00

You SQL statement is not correct as it seems.
It should be in following syntax-

SQL

UPDATE table_name
SET column1=value1,column2=value2,...
WHERE some_column=some_value;

Ref: SQL UPDATE Statement[^]

Try something like-

C#

sql = "Update [AllPrinting$] SET UserName=@UserName, UserNameAR=@UserNameAR , Country=@Country, CountryAR=@CountryAR, Member=@Member, MemberAR=@MemberAR WHERE UserID=@UserID";

Hope, it helps :)
Please let me know in case it doesn't work.