Exception: More than one sibling of component 'Radzen.Blazor.RadzenDropDownItem' has the same key value, 'Logistics'

Radzen.Blazor Components
1

Hello,
this exception is thrown:

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blazor.webassembly.js:1 crit: Microsoft.AspNetCore.Components.WebAssembly.Rendering.WebAssemblyRenderer[100]
Unhandled exception rendering component: More than one sibling of component 'Radzen.Blazor.RadzenDropDownItem1[System.String]' has the same key value, 'Logistics'. Key values must be unique. System.InvalidOperationException: More than one sibling of component 'Radzen.Blazor.RadzenDropDownItem1[System.String]' has the same key value, 'Logistics'. Key values must be unique.
at Microsoft.AspNetCore.Components.RenderTree.RenderTreeDiffBuilder.ThrowExceptionForDuplicateKey(Object , RenderTreeFrame& )
at Microsoft.AspNetCore.Components.RenderTree.RenderTreeDiffBuilder.BuildKeyToInfoLookup(DiffContext , Int32 , Int32 , Int32 , Int32 )
at Microsoft.AspNetCore.Components.RenderTree.RenderTreeDiffBuilder.AppendDiffEntriesForRange(DiffContext& , Int32 , Int32 , Int32 , Int32 )
at Microsoft.AspNetCore.Components.RenderTree.RenderTreeDiffBuilder.AppendDiffEntriesForFramesWithSameSequence(DiffContext& , Int32 , Int32 )
at Microsoft.AspNetCore.Components.RenderTree.RenderTreeDiffBuilder.AppendDiffEntriesForRange(DiffContext& , Int32 , Int32 , Int32 , Int32 )
at Microsoft.AspNetCore.Components.RenderTree.RenderTreeDiffBuilder.AppendDiffEntriesForFramesWithSameSequence(DiffContext& , Int32 , Int32 )
at Microsoft.AspNetCore.Components.RenderTree.RenderTreeDiffBuilder.AppendDiffEntriesForRange(DiffContext& , Int32 , Int32 , Int32 , Int32 )
at Microsoft.AspNetCore.Components.RenderTree.RenderTreeDiffBuilder.AppendDiffEntriesForFramesWithSameSequence(DiffContext& , Int32 , Int32 )
at Microsoft.AspNetCore.Components.RenderTree.RenderTreeDiffBuilder.AppendDiffEntriesForRange(DiffContext& , Int32 , Int32 , Int32 , Int32 )
at Microsoft.AspNetCore.Components.RenderTree.RenderTreeDiffBuilder.AppendDiffEntriesForFramesWithSameSequence(DiffContext& , Int32 , Int32 )
at Microsoft.AspNetCore.Components.RenderTree.RenderTreeDiffBuilder.AppendDiffEntriesForRange(DiffContext& , Int32 , Int32 , Int32 , Int32 )
at Microsoft.AspNetCore.Components.RenderTree.RenderTreeDiffBuilder.AppendDiffEntriesForFramesWithSameSequence(DiffContext& , Int32 , Int32 )
at Microsoft.AspNetCore.Components.RenderTree.RenderTreeDiffBuilder.AppendDiffEntriesForRange(DiffContext& , Int32 , Int32 , Int32 , Int32 )
at Microsoft.AspNetCore.Components.RenderTree.RenderTreeDiffBuilder.ComputeDiff(Renderer , RenderBatchBuilder , Int32 , ArrayRange1 , ArrayRange1 )
at Microsoft.AspNetCore.Components.Rendering.ComponentState.RenderIntoBatch(RenderBatchBuilder , RenderFragment )
at Microsoft.AspNetCore.Components.RenderTree.Renderer.RenderInExistingBatch(RenderQueueEntry )
at Microsoft.AspNetCore.Components.RenderTree.Renderer.ProcessRenderQueue()

Heeeeelp

2

The error message says it all. You have two items with the same value.

1 Like
4

what is the soultion

5

You may have already found the solution by now. In any case, this might help others. I suspect the issue could be your Records Per Page may have duplicate values. This can happen if you have something like PageSizeOptions=@(new int{10, 50, 100,items.Count() }) and items.Count happens to be equal to any of the other elements in the array.

If that is not the source of your error, then I would look at any other dropdown filters used in your DataGrid and ensure that the data in each list contains unique values.