Error in sql query

Database Design as follows
 
FieldName Data Type
Name varchar
DOB Date time
Mobile Varchar
Email Varchar
Wedding day datetime
Activate Varchar
 

Code as follows for inserting the record.
 
con.Open();
sql command cmd = new sql command(" '" + txt_name.Text + "','" + txt_mobile.Text + "','" + txt_Email.Text + "','" + FromDate.SelectedDateValue + "','" + Todate.SelectedDateValue + "' where Activate<>'D')");
cmd.ExecuteNonQuery();
con.Close();
 

when i run i have error in query.
 
query as follows
 
sql command cmd = new sql command(" '" + txt_name.Text + "','" + txt_mobile.Text + "','" + txt_Email.Text + "','" + FromDate.SelectedDateValue + "','" + Todate.SelectedDateValue + "' where Activate<>'D')");
 
please help me.to get the solution for writing the correct for my above query