Add a tooltip to CheckTx checkbox and also evaluate tx scripts using Bitcoin.Net library

Author: Coding-Enthusiast

.gitignore

@@ -193,4 +193,5 @@ FakesAssemblies/
 # LightSwitch generated files
 GeneratedArtifacts/
 _Pvt_Extensions/
-ModelManifest.xml
+ModelManifest.xml
+*.pubxml

SharpPusher/SharpPusher.csproj

@@ -9,7 +9,7 @@
     <Version>0.11.0</Version>
   </PropertyGroup>
   <ItemGroup>
-    <PackageReference Include="Autarkysoft.Bitcoin" Version="0.11.0" />
+    <PackageReference Include="Autarkysoft.Bitcoin" Version="0.12.0" />
     <PackageReference Include="Avalonia" Version="0.10.0" />
     <PackageReference Include="Avalonia.Desktop" Version="0.10.0" />
     <PackageReference Include="Avalonia.Diagnostics" Version="0.10.0" />

SharpPusher/ViewModels/MainWindowViewModel.cs

@@ -246,6 +246,9 @@ public bool CheckTx
             set => SetField(ref _checkTx, value);
         }
 
+        public static string CheckTxToolTip => "Enable to check the transaction hex using Bitcoin.Net library by deserializing " +
+            "and evaluating all its scripts.";
+
 
         private bool _isSending;
         public bool IsSending
@@ -283,6 +286,23 @@ private async void BroadcastTx()
                     Status = $"Invalid transaction. Error message: {error}";
                     return;
                 }
+
+                for (int i = 0; i < tx.TxInList.Length; i++)
+                {
+                    if (!tx.TxInList[i].SigScript.TryEvaluate(out _, out _, out error))
+                    {
+                        Status = $"Invalid input signature script at index {i}. Error message: {error}";
+                        return;
+                    }
+                }
+                for (int i = 0; i < tx.TxOutList.Length; i++)
+                {
+                    if (!tx.TxOutList[i].PubScript.TryEvaluate(out _, out _, out error))
+                    {
+                        Status = $"Invalid input pubkey script at index {i}. Error message: {error}";
+                        return;
+                    }
+                }
             }
 
             IsSending = true;

SharpPusher/Views/MainWindow.axaml

@@ -39,7 +39,8 @@
 
       <CheckBox Content="Deserialize and check transaction" 
                 IsVisible="{Binding IsCheckTxVisible}"
-                IsChecked="{Binding CheckTx}" />
+                IsChecked="{Binding CheckTx}"
+                ToolTip.Tip="{Binding CheckTxToolTip}"/>
 
       <Button Content="Broadcast"
               Command="{Binding BroadcastTxCommand}"