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SELECT ODBC table and INSERT into SQL Server

I have an ODBC connection to a database of which I need one table of data with 10 columns.
I need to insert this table into SQL Server database. I´ve tried to many ways to do it but still with any results.
OdbcConnection OCon = new OdbcConnection("Dsn=" + DbSource.SelectedItem.ToString());
SqlConnection SCon = new SqlConnection("Data Source=" + SrvrDD.SelectedItem.ToString() + ";database=" + DdDestiny.SelectedItem.ToString() + ";User ID=id;Password=pass");
OCon.Open();
SCon.Open();
String QrySelect ="SELECT * FROM " + GridCon.Rows[x].Cells[1].Value;
OdbcCommand commandC = new OdbcCommand(QrySelect, OCon);
String QryInsert = "INSERT INTO " + DdDestiny.SelectedItem.ToString() + ".dbo." + GridCon.Rows[x].Cells[2].Value + " VALUES (#Sql)";
SqlCommand commandD = new SqlCommand(QryInsert, SCon);
OdbcDataReader Oreader = commandC.ExecuteReader();
commandD.Parameters.Add("#Sql",SqlDbType.NVarChar, 5);
while (Oreader.Read())
{
string s = Oreader[0].ToString();
commandD.Parameters["#Sql"].Value = s;
commandD.ExecuteNonQuery();
}
Everything works fine but when commandB.ExecuteNonQuery(); get in, an error appears:
"The column name or the specified values do not correspond to the definition of the table."
Is the translation.

C# query with 3 AND conditions

I have 3 combobox that take there information from MS Access database. I want to select data from database according to the values of the combo boxes.
I wrote this query:
string query = "select * from products where category='" + comboBox1.Text + "' and subcategory='" + comboBox2.Text + "' and size='" + comboBox3.Text + "'";
But it gives me the following exception:
IErrorInfo.GetDescription failed with E_FAIL(0x80004005).
Can you help me?
Full code:
connection.Open();
OleDbCommand command = new OleDbCommand();
command.Connection = connection;
string query = "select * from products where category='" + comboBox1.Text +
"' and subcategory='" + comboBox2.Text + "' and size='" + comboBox3.Text + "'";
command.CommandText = query;
OleDbDataAdapter da = new OleDbDataAdapter(command);
DataTable dt = new DataTable();
da.Fill(dt);
dataGridView1.DataSource = dt;
connection.Close();

I'm guessing since size is a reserved word in MS Access, it is throwing that error.
See this link for list of reserved words in Access.
Try changing the column name. Also, try to use parameterized query to prevent sql injection.
See this answer on how to use parameterized query in Access.

OleDB Connection String to MySQL Connection String

I have this OleDB code which basically reads an excel file and displays it on to the datagridview after a button click:
string pathConn = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + txtPath.Text + ";Extended Properties=\"Excel 8.0;HDR=Yes;\";";
OleDbConnection conn = new OleDbConnection(pathConn);
OleDbDataAdapter myDataAdapter = new OleDbDataAdapter("SELECT * FROM [" + txtSheet.Text + "$]", conn);
DataTable dt = new DataTable();
myDataAdapter.Fill(dt);
dgvViewDrivers.DataSource = dt;
My question is that how would I make a MySQL Connection out of this OleDB connection string? Please help me.

You need to use MySQL .NET connector
http://dev.mysql.com/downloads/connector/net/
using (MySqlConnection conn = new MySqlConnection("SERVER=" + server + ";" + "DATABASE=" +
database + ";" + "UID=" + uid + ";" + "PASSWORD=" + password + ";"))
{
using (MySqlCommand cmd = conn.CreateCommand())
{
cmd.CommandText = "sql here";
cmd.ExecuteNonQuery();
}
}
Your current code
This
using (vDBCon = new MySqlConnection("SERVER=localhost;Data Source=" + txtPath.Text + ";user=root;PASSWORD= ;"))
txtPath.Text needs to be the name of your database in MySQL. I assume you left the password out. If not you need one.
"SERVER=localhost;Data Source=MyDatabase;user=root;PASSWORD=MyPassword;"
where MyDatabase is the actual name of your database and MyPassword is the password you use to login with
You have to actually be running MySQL Server itself to create and connect to a MySQL database. it doesn't work of a file like Access. If you want something like that just use SQLite.
this
vCmd.CommandText = "SELECT * FROM [" + txtSheet.Text + "$]";
this you will be selecting data from your table in MySQL so it needs to look like
vCmd.CommandText = "SELECT * FROM MyTable";
where MyTable is actually the name of your table in the database

Error SQL INSERT INTO with Odbc Command C#

Scenario:
I want to input data from textbox into the database based on microsoft data base (.mdb)
I already searching and find good clue and my result was here.
This Code below was inside command button click event:
using (OdbcConnection conn= new OdbcConnection())
{
conn.ConnectionString = #"Driver={Microsoft Access Driver (*.mdb)};" +
"Dbq=C:\\BlaBlaBla.mdb;Uid=Admin;Pwd=;";
conn.Open();
using (OdbcCommand cmd = new OdbcCommand(
"INSERT INTO TABLENAME (FIELD1,FIELD2,FIELD3) VALUES ('" + txtFIELD1Input.Text + "','" + txtFIELD2Input.Text + "','" + txtFIELDInput.Text + "' )", conn))
{
cmd.ExecuteNonQuery();
}
conn.Close();
}
And when I click the command button, I get unfriendly exception
ERROR [42S02] [Microsoft][ODBC Microsoft Access Driver] Could not find
output table 'TABLENAME'.
That happened when I insert cmd.ExecuteNonQuery. If I didn't insert that, of course nothing happens in my table target.
So what mistakes did I make in that code? What should I do?

"INSERT INTO TABLENAME (FIELD1,FIELD2,FIELD3) VALUES ('" + txtFIELD1Input.Text + "','" + txtFIELD2Input.Text + "','" + txtFIELDInput.Text + "' )", myConnection))
change this into
"INSERT INTO TABLENAME (FIELD1,FIELD2,FIELD3) VALUES ('" + txtFIELD1Input.Text + "','" + txtFIELD2Input.Text + "','" + txtFIELDInput.Text + "' )", Conn))
you define Conn as your connection string not "myConnection"

So i changed to OleDbConnection And My Problem Cleared,
using (OleDbConnectionconn= new OleDbConnection())
{
conn.ConnectionString = #"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:\Users\LOSERONE\Documents\DATABASE\Latihan1.mdb";
conn.Open();
using (OleDbCommand cmd = new OleDbCommand (
"INSERT INTO TABLENAME (FIELD1,FIELD2,FIELD3) VALUES ('" + txtFIELD1Input.Text + "','" + txtFIELD2Input.Text + "','" + txtFIELDInput.Text + "' )", conn))
{
cmd.ExecuteNonQuery();
}
conn.Close();
}
Seems, to connected the database must same as the connection string in the properties on the targeted database.
Does anyone can tell me what is the difference OleDbConnection with OdbcConnection in .mdb database file?!

This problem is because sql connection's default database after login is not the same where your table 'TABLENAME' exists. Try to add database name before table like this:
INSERT INTO DBNAME..TABLENAME (FIELD1, FIELD2)

replace your myConnection to Conn

get column names from a table where one of the column name is a key word

Im using c# .net windows form application. I have created a database which has many tables. In one of the tables I have entered data. In this table I have 4 columns named key, name,age,value. Here the name "key" of the first column is a key word. Now I am trying to get these column names into a combo box. I am unable to get the name "key".
It works for "key" when I use this code:
private void comboseccolumn_SelectedIndexChanged(object sender, EventArgs e)
{
string dbname = combodatabase.SelectedItem.ToString();
string path = #"Data Source=" + textBox1.Text + ";Initial Catalog=" + dbname + ";Integrated Security=SSPI";
//string path=#"Data Source=SYED-PC\SQLEXPRESS;Initial Catalog=resources;Integrated Security=SSPI";
SqlConnection con = new SqlConnection(path);
string tablename = comboBox2.SelectedItem.ToString();
//string query= "Select * from" +tablename+;
//SqlDataAdapter adp = new SqlDataAdapter(" Select [Key] ,value from " + tablename, con);
SqlDataAdapter adp = new SqlDataAdapter(" Select [" + combofirstcolumn.SelectedItem.ToString() + "]," + comboseccolumn.SelectedItem.ToString() + "\t from " + tablename, con);
DataTable dt = new DataTable();
adp.Fill(dt);
dataGridView1.DataSource = dt;
}
This is beacuse I am using "[" in the select query. But it wont work for non keys. Or if I remove the "[" it is not working for key . Please suggest me so that I can get both key as well as nonkey column names.

Just enclosed them in square bracket:
select [key] from tbl
Or if you want your code to be ANSI-compliant, use double quote:
select "key" from tbl
Try this if this will work:
SqlDataAdapter adp = new SqlDataAdapter(" Select \"" + combofirstcolumn.SelectedItem.ToString() + "\"," + comboseccolumn.SelectedItem.ToString() + "\t from " + tablename, con);

Value is also a keyword in MSSQL. I would have thought that you would have to wrap this in [] too.

Try using Alias for the "key" column.
For E.g: Select Key as Keyword ,value as KeywordValue ...