Check Playlist file validity before loading using XSD.

YAMP-alpha/PlaylistStructure.xsd

@@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="Windows-1252"?>
+<xs:schema attributeFormDefault="unqualified" elementFormDefault="qualified" xmlns:xs="http://www.w3.org/2001/XMLSchema">
+  <xs:element name="YAMP_Playlist">
+    <xs:complexType>
+      <xs:sequence>
+        <xs:element maxOccurs="unbounded" name="Music">
+          <xs:complexType>
+            <xs:sequence>
+              <xs:element name="File" type="xs:string" />
+              <xs:element name="Title" type="xs:string" />
+              <xs:element name="TrackNum" type="xs:string" />
+              <xs:element name="Album" type="xs:string" />
+              <xs:element name="Year" />
+              <xs:element name="Artist" />
+              <xs:element name="AlbumArtist" type="xs:string" />
+              <xs:element name="Composer" />
+              <xs:element name="Genre" type="xs:string" />
+              <xs:element name="DiskNumber" />
+              <xs:element name="Comment" />
+              <xs:element name="Path" type="xs:string" />
+              <xs:element name="Duration" type="xs:string" />
+              <xs:element name="BitRate" type="xs:unsignedInt" />
+              <xs:element name="SampleRate" type="xs:unsignedShort" />
+            </xs:sequence>
+          </xs:complexType>
+        </xs:element>
+      </xs:sequence>
+    </xs:complexType>
+  </xs:element>
+</xs:schema>

YAMP-alpha/bin/Debug/YAMP-alpha.exe.config

@@ -1,5 +1,10 @@
 <?xml version="1.0" encoding="utf-8"?>
 <configuration>
+  <configSections>
+  </configSections>
+    <appSettings>  
+    <add key="PLSchemaFile" value="C:\Users\pc\source\repos\YAMP-alpha\PlaylistStructure.xsd"/>
+  </appSettings>  
   <startup>
     <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.7.2" />
   </startup>