fix error in telemetry initializer code

mrbullwinkle · mrbullwinkle · commit 4ee6527c93bc · 2020-03-25T18:45:49.000-04:00
diff --git a/articles/azure-monitor/app/api-filtering-sampling.md b/articles/azure-monitor/app/api-filtering-sampling.md
@@ -483,7 +483,7 @@ The following sample initializer adds a custom property to every tracked telemet
 public void Initialize(ITelemetry item)
 {
   var itemProperties = item as ISupportProperties;
-  if(itemProperties != null && !itemProperties.ContainsKey("customProp"))
+  if(itemProperties != null && !itemProperties.Properties.ContainsKey("customProp"))
     {
         itemProperties.Properties["customProp"] = "customValue";
     }

Original file line number	Diff line number	Diff line change
`@@ -483,7 +483,7 @@ The following sample initializer adds a custom property to every tracked telemet`
`483`	`483`	`public void Initialize(ITelemetry item)`
`484`	`484`	`{`
`485`	`485`	`var itemProperties = item as ISupportProperties;`
`486`		`- if(itemProperties != null && !itemProperties.ContainsKey("customProp"))`
	`486`	`+ if(itemProperties != null && !itemProperties.Properties.ContainsKey("customProp"))`
`487`	`487`	`{`
`488`	`488`	`itemProperties.Properties["customProp"] = "customValue";`
`489`	`489`	`}`