Unable to set property 'MaxLength' on object of type 'Radzen.Blazor.RadzenTextBox'. The error was: Specified cast is not valid

zasage · January 17, 2024, 6:04pm

I am doing dynamically built components due to having a dynamic schema that we are using to generate the form.

builder.OpenComponent(0);
builder.AddAttribute(1, "Value", displayValue);
if(hasMaxLength)
{
builder.AddAttribute(2, "MaxLength", (int)maxLength);
}

I've tried everything to make sure that the maxLength is going in as an "int" but it seems to be getting converted to a string still, which is causing this error:

Unhandled exception rendering component: Unable to set property 'MaxLength' on object of type 'Radzen.Blazor.RadzenTextBox'. The error was: Specified cast is not valid.
System.InvalidOperationException: Unable to set property 'MaxLength' on object of type 'Radzen.Blazor.RadzenTextBox'. The error was: Specified cast is not valid.

enchev · January 17, 2024, 6:18pm

Hey @zasage,

This property is nullable long not int:

github.com

radzenhq/radzen-blazor/blob/master/Radzen.Blazor/RadzenTextBox.razor.cs#L46


      
          /// The type of built-in autocomplete.
          /// </value>
          [Parameter]
          public AutoCompleteType AutoCompleteType { get; set; } = AutoCompleteType.On;
          
          /// <summary>
          /// Gets or sets the maximum allowed text length.
          /// </summary>
          /// <value>The maximum length.</value>
          [Parameter]
          public long? MaxLength { get; set; }
          
          /// <summary>
          /// Specifies whether to remove any leading or trailing whitespace from the value. Set to <c>false</c> by default.
          /// </summary>
          /// <value><c>true</c> if trimming is enabled; otherwise, <c>false</c>. </value>
          [Parameter]
          public bool Trim { get; set; }
          
          /// <summary>
          /// Handles change event of the built-in <c>input</c> elementt.