CP: Why does this bug only occurred in Visual Studio?!!

memorydream · memorydream · commit 996c18a79a48 · 2021-07-11T01:48:54.000+08:00
diff --git a/PearlCalculatorCP/ViewModels/ResultPanelViewModel.cs b/PearlCalculatorCP/ViewModels/ResultPanelViewModel.cs
@@ -30,11 +30,13 @@ public int AmountResultSelectedIndex
 #nullable disable
             set
             {
-                if (value < -1 || value >= AmountResult!.Count || value == _amountResultSelectedIndex) 
+                if (value < -1 || value == _amountResultSelectedIndex || (AmountResult != null && value >= AmountResult.Count)) 
                     return;
+
                 this.RaiseAndSetIfChanged(ref _amountResultSelectedIndex, value);
 
                 if (value == -1) return;
+
                 var res = AmountResult[value];
                 EventManager.PublishEvent(this, "setRTCount", new SetRTCountArgs("ResultPanel", res.Red, res.Blue));
             }

Original file line number	Diff line number	Diff line change
`@@ -30,11 +30,13 @@ public int AmountResultSelectedIndex`
`30`	`30`	`#nullable disable`
`31`	`31`	`set`
`32`	`32`	`{`
`33`		`- if (value < -1 \|\| value >= AmountResult!.Count \|\| value == _amountResultSelectedIndex)`
	`33`	`+ if (value < -1 \|\| value == _amountResultSelectedIndex \|\| (AmountResult != null && value >= AmountResult.Count))`
`34`	`34`	`return;`
	`35`	`+`
`35`	`36`	`this.RaiseAndSetIfChanged(ref _amountResultSelectedIndex, value);`
`36`	`37`
`37`	`38`	`if (value == -1) return;`
	`39`	`+`
`38`	`40`	`var res = AmountResult[value];`
`39`	`41`	`EventManager.PublishEvent(this, "setRTCount", new SetRTCountArgs("ResultPanel", res.Red, res.Blue));`
`40`	`42`	`}`