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DatePicker bug #168

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opened 2026-01-29 17:32:42 +00:00 by claunia · 1 comment
claunia commented 2026-01-29 17:32:42 +00:00
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Originally created by @ThomasShiu on GitHub (Aug 2, 2021).

DatePicker bug
When I use DatePicker,Then I selected a date and throw a error.Even onchange event not fire.

<RadzenDatePicker Name="dt_1"	TValue="string" DateFormat="yyyy/MM/dd" />

blazor.webassembly.js:1 crit: Microsoft.AspNetCore.Components.WebAssembly.Rendering.WebAssemblyRenderer[100]
Unhandled exception rendering component: Specified cast is not valid.
System.InvalidCastException: Specified cast is not valid.
at Radzen.Blazor.RadzenDatePicker1.<OnChange>d__137[[System.String, System.Private.CoreLib, Version=5.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e]].MoveNext() at Radzen.Blazor.RadzenDatePicker1.d__139.MoveNext()
at Radzen.Blazor.RadzenDatePicker`1.<>c__DisplayClass0_0.<b__8>d.MoveNext()
--- End of stack trace from previous location ---
at Microsoft.AspNetCore.Components.ComponentBase.CallStateHasChangedOnAsyncCompletion(Task task)
at Microsoft.AspNetCore.Components.RenderTree.Renderer.GetErrorHandledTask(Task taskToHandle)

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radzen_dt_error

Desktop (please complete the following information):

  • OS: windows 10
  • Browser :chrome
  • Version :92.0.4515.107
Originally created by @ThomasShiu on GitHub (Aug 2, 2021). **DatePicker bug** When I use DatePicker,Then I selected a date and throw a error.Even onchange event not fire. ``` <RadzenDatePicker Name="dt_1" TValue="string" DateFormat="yyyy/MM/dd" /> ``` blazor.webassembly.js:1 crit: Microsoft.AspNetCore.Components.WebAssembly.Rendering.WebAssemblyRenderer[100] Unhandled exception rendering component: Specified cast is not valid. System.InvalidCastException: Specified cast is not valid. at Radzen.Blazor.RadzenDatePicker`1.<OnChange>d__137[[System.String, System.Private.CoreLib, Version=5.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e]].MoveNext() at Radzen.Blazor.RadzenDatePicker`1.<SetDay>d__139[[System.String, System.Private.CoreLib, Version=5.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e]].MoveNext() at Radzen.Blazor.RadzenDatePicker`1.<>c__DisplayClass0_0.<<BuildRenderTree>b__8>d[[System.String, System.Private.CoreLib, Version=5.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e]].MoveNext() --- End of stack trace from previous location --- at Microsoft.AspNetCore.Components.ComponentBase.CallStateHasChangedOnAsyncCompletion(Task task) at Microsoft.AspNetCore.Components.RenderTree.Renderer.GetErrorHandledTask(Task taskToHandle) **Screenshots** ![radzen_dt_error](https://user-images.githubusercontent.com/8251586/127796170-24991a6d-e8f1-4dd7-87a4-2143044695ae.png) **Desktop (please complete the following information):** - OS: windows 10 - Browser :chrome - Version :92.0.4515.107
claunia commented 2026-01-29 17:32:42 +00:00
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@enchev commented on GitHub (Aug 2, 2021):

TValue cannot be string, only DateTime and DateTime? are supported

@enchev commented on GitHub (Aug 2, 2021): TValue cannot be string, only DateTime and DateTime? are supported
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Reference: starred/radzen-blazor#168
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