public void LlenarComboBox() { System.Data.SqlClient.SqlConnection SqlCon = new System.Data.SqlClient.SqlConnection(CCadena); SqlCon.Open(); System.Data.SqlClient.SqlCommand SqlCom = new System.Data.SqlClient.SqlCommand(); SqlCom.Connection = SqlCon; SqlCom.CommandType = CommandType.StoredProcedure; SqlCom.CommandText = "sp_databases"; System.Data.SqlClient.SqlDataReader SqlDR; SqlDR = SqlCom.ExecuteReader(); List <String> listBD = new List <String>(); while (SqlDR.Read()) { comboBox1.Items.Add(SqlDR.GetValue(0)); } }