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Jimmy Engström 2023-02-17 15:28:17 +01:00
parent 2190113c56
commit 3088165398
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Chapter08/MyBlog/Components/RazorComponents/InputTextAreaOnInput.cs Normal file
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using System.Diagnostics.CodeAnalysis;
using Microsoft.AspNetCore.Components.Rendering;
namespace Microsoft.AspNetCore.Components.Forms;
public class InputTextAreaOnInput :
InputBase<string?>
{
protected override void BuildRenderTree(RenderTreeBuilder builder)
{
builder.OpenElement(0, "textarea");
builder.AddMultipleAttributes(1, AdditionalAttributes);
builder.AddAttribute(2, "class", CssClass);
builder.AddAttribute(3, "value", BindConverter.FormatValue(CurrentValue));
builder.AddAttribute(4, "oninput", EventCallback.Factory.CreateBinder<string?>(this, __value => CurrentValueAsString = __value, CurrentValueAsString));
builder.CloseElement();
}
protected override bool TryParseValueFromString(string? value, out string? result, [NotNullWhen(false)] out string? validationErrorMessage)
{
result = value;
validationErrorMessage = null;
return true;
}
}