init:

var array = new string[] {"csharp","java","python","go"};
var value = array[0];
ref var refValue = ref array[0];

modify value, it will point another object and doesn't effect the original array

value = "dotnet";

modify refValue, it point a new object and will change the original array element's value

refValue = "dotnet";

Document Details

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• ID: 3d67349b-72bc-b7cf-f754-fa62d1fb592d
• Version Independent ID: 4f413bcc-90e7-d971-fe75-b4876124e75d
• Content: ref keyword (C# Reference)
• Content Source: docs/csharp/language-reference/keywords/ref.md
• Product: dotnet-csharp
• GitHub Login: @BillWagner
• Microsoft Alias: wiwagn