Question

As the title suggests, I am trying to “nest” – or create an array within an array in C# using CodeDom.

Here is the line that I am trying to replicate:

T.Invoke(null, new object[] { new string[] {} } );

Where T.Invoke is a method.

I am able to create the above line with almost no flaws. The only issue I have is creating the second set of “{}” brackets. Below is the code I used:

CodeMethodInvokeExpression invoke_expression = new CodeMethodInvokeExpression(
new CodeTypeReferenceExpression("T"),"Invoke",
new CodePrimitiveExpression(null),
new CodeArrayCreateExpression(typeof(object),
new CodeExpression[] {
new CodeArrayCreateExpression(typeof(string[]),
new CodeExpression[] {})} )));

Perhaps someone could make sense of my code, and maybe even find my error.

Thank you for any help,

Evan

Answer 1

Use an empty CodeSnippetExpression to coerce it into creating the brackets:

CodeMethodInvokeExpression invoke_expression = new CodeMethodInvokeExpression(
    new CodeTypeReferenceExpression("T"),
    "Invoke",
    new CodePrimitiveExpression(null),
    new CodeArrayCreateExpression(
        typeof(object),
        new CodeExpression[]
        {
            new CodeArrayCreateExpression(
                typeof(string[]),
                new CodeExpression[]
                {
                    new CodeSnippetExpression("")
                })/*CodeArrayCreateExpression */
        })/*CodeArrayCreateExpression */
    )/*CodeMethodInvokeExpression*/;