SqlCommand com = new SqlCommand("SELECT * FROM MASTER WHERE (date_m BETWEEN '" + az_m + "' AND '" + ta_m + "')", strconn);
DataSet ds = new DataSet();
DataTable dt = new DataTable();
SqlDataAdapter da = new SqlDataAdapter(com);
strconn.Open();
da.Fill(dt);
dataGridView4.DataSource = dt;
strconn.Close();
اين پيغام خطا را مي دهد
Syntax error converting datetime from character string.
ta_m يك تازيخ ميلادي است
az_m يك تاريخ ميلادي است