Added transactionId to the "build transaction" return message

Breeze/src/Breeze.Wallet/Controllers/WalletController.cs

@@ -280,7 +280,8 @@ namespace Breeze.Wallet.Controllers
                 var model = new WalletBuildTransactionModel
                 {
                     Hex = transactionResult.hex,
-                    Fee = transactionResult.fee
+                    Fee = transactionResult.fee,
+                    TransactionId = transactionResult.transactionId
                 };
                 return this.Json(model);
             }

Breeze/src/Breeze.Wallet/IWalletManager.cs

@@ -135,7 +135,7 @@ namespace Breeze.Wallet
         /// <param name="feeType">The type of fee to be included.</param>
         /// <param name="allowUnconfirmed">Whether or not we allow this transaction to rely on unconfirmed outputs.</param>
         /// <returns></returns>
-        (string hex, Money fee) BuildTransaction(string walletName, string accountName, CoinType coinType, string password, string destinationAddress, Money amount, string feeType, bool allowUnconfirmed);
+        (string hex, uint256 transactionId, Money fee) BuildTransaction(string walletName, string accountName, CoinType coinType, string password, string destinationAddress, Money amount, string feeType, bool allowUnconfirmed);
         
         /// <summary>
         /// Sends a transaction to the network.

Breeze/src/Breeze.Wallet/Models/WalletBuildTransactionModel.cs

@@ -13,6 +13,9 @@ namespace Breeze.Wallet.Models
 		public Money Fee { get; set; }
         
 		[JsonProperty(PropertyName = "hex")]
-		public string Hex { get; set; }        
-	}   	
+		public string Hex { get; set; }
+
+        [JsonProperty(PropertyName = "transactionId")]
+        public uint256 TransactionId { get; set; }
+    }   	
 }

Breeze/src/Breeze.Wallet/WalletManager.cs

@@ -325,7 +325,7 @@ namespace Breeze.Wallet
         }
 
         /// <inheritdoc />
-        public (string hex, Money fee) BuildTransaction(string walletName, string accountName, CoinType coinType, string password, string destinationAddress, Money amount, string feeType, bool allowUnconfirmed)
+        public (string hex, uint256 transactionId, Money fee) BuildTransaction(string walletName, string accountName, CoinType coinType, string password, string destinationAddress, Money amount, string feeType, bool allowUnconfirmed)
         {
             if (amount == Money.Zero)
             {
@@ -388,7 +388,7 @@ namespace Breeze.Wallet
                 throw new Exception("Could not build transaction, please make sure you entered the correct data.");
             }
 
-            return (tx.ToHex(), calculationResult.fee);
+            return (tx.ToHex(), tx.GetHash(), calculationResult.fee);
         }
 
         /// <summary>