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[Randy More]

I was able to get it to work this way

<blockquote>@page "/"
@using Smart.Blazor;
@inject IJSRuntime JS

window.smartTreeInterop = {
preventDragDefault: function (treeId)
{
const tree = document.getElementById(treeId);
if (tree)
{
// tree.addEventListener("dragStart", function (e) {
// e.dataTransfer.effectAllowed = "copyMove";
// }, true); // useCapture=true to catch early

tree.addEventListener("dragEnd", function (e) {
e.preventDefault();
}, true); // useCapture=true to catch early
}
}
};

protected override async Task OnAfterRenderAsync(bool firstRender)
{
if (firstRender)
{
await JS.InvokeVoidAsync(“smartTreeInterop.preventDragDefault”, “Tree1”);
await JS.InvokeVoidAsync(“smartTreeInterop.preventDragDefault”, “Tree2”);
}
}

• This reply was modified 2 months, 3 weeks ago by Randy More.

[Randy More]

This does not really help.  I am in Blazor.  This example is JS.
I have limited experience in interop and chose Smart.Blazor and to do the project in Blazor for that reason.
can I do a similar in C# in Blazor?
if not can you give an example that is more targeted for a Blazor project please

[Randy More]

turns out transposed grids are not natively supported in Smart.Blazor as in some other packages.
may I suggest this would be a nice feature in future.
In any event can just transpose the data in code and get a similar result, just a bit of bother

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