blazor

问题 I need to detect if the user of my blazor server side application is using a mobile device. Is there any way to find out which device the user is using? I know I can do it with a JSRuntime but is there any way to figure it out with pure C#? 回答1: I did find this article that will read you the width and height of a window in Blazor. Looks like it uses JS Interop. With that, you can determine if a user is using a mobile based on the width of their resolution. Of course, it's not 100% full proof

问题 We know that with InputSelect we cannot use both @bind-value and @onchange If we use the latter (with select instead InputSelect) how can we set a initial value different from the first ? (eg. in this sample set to 2018, the value of a variable) Something like if (i == month) => selected <select @onchange="ChangeYear"> @for (int i = 2015; i < DateTime.Now.Year + 1; i++) { <option value="@i">@i</option> } </select> @code { int year = 2018; void ChangeYear(ChangeEventArgs e) { int year =

问题 I am facing an issue when loading a site built and published using blazor. I get the following error message: " Failed to find a valid digest in the 'integrity' attribute for resource 'https://MYWEBSITEURL.com/_framework/System.Private.CoreLib.dll' with computed SHA-256 integrity 'xV9SflNt5Ex5gP7OznQorlp2VkdJXkcAiopU+h5DRzY='. The resource has been blocked. " I assume that the browser blocks the files from downloading because the hashes created when publishing do not match. No files where

问题 I can use the Microsoft.AspNetCore.Components.Authorization namespace in my Blazor Server Project. However, I can't get it to work in my Razor Class Library project. I even added the same Nuget Libraries and mirrored the _Imports.razor file, but the library project doesn't recognize this namespace. Is there some limitation or am I doing something wrong? 回答1: The namespace name usually matches an Assembly and a Package. You can easily find out with the F12 key or consult the docs. The page you

问题 I can use the Microsoft.AspNetCore.Components.Authorization namespace in my Blazor Server Project. However, I can't get it to work in my Razor Class Library project. I even added the same Nuget Libraries and mirrored the _Imports.razor file, but the library project doesn't recognize this namespace. Is there some limitation or am I doing something wrong? 回答1: The namespace name usually matches an Assembly and a Package. You can easily find out with the F12 key or consult the docs. The page you

问题 Please note that although this is closely related to this question, the answer there is specific to one known model property, whereas I want this to work for any property, so the component is reusable. I want to use the Blazor <ValidationMessage> tag within a component. However, when I do this, the validation message isn't shown. For example, the following component ( FormRowText.razor ) creates a row (in the Bootstrap grid sense) containing an <input type="text /> for a named property on a

问题 when I work in debug with IIS Express in visual studio and try to reach a file in /wwwroot, I don't have any problem with the path = 'wwwroot/fileName'. But when I deploy my website into IIS Express server, I can't reach the file anymore and I get error because the file doesn't exist. Did I make something wrong ? Did the path is not the same when WebSite is deploy ? PS : The file is '.xlsx' extension 回答1: Most likely the file is not being deployed. Assuming you're using Visual Studio, try

问题 I try to capture text changes of InputText in Blazor (ServerSide) and then call a async method to check if input is correct coupon code or not. HTML: <EditForm Model="@Basket" OnValidSubmit="@CommitBasket"> Gutscheincode <InputText class="coupon-input checkout-control pristine untouched" @bind-Value="CouponCode" @onchange="CouponCodeChanged"> </InputText> @CouponText </EditForm>` But The CouponCodeChanged isn't raised - OnKeyUp is not useful because the Text Value isn't changed at that state.

问题 I try to capture text changes of InputText in Blazor (ServerSide) and then call a async method to check if input is correct coupon code or not. HTML: <EditForm Model="@Basket" OnValidSubmit="@CommitBasket"> Gutscheincode <InputText class="coupon-input checkout-control pristine untouched" @bind-Value="CouponCode" @onchange="CouponCodeChanged"> </InputText> @CouponText </EditForm>` But The CouponCodeChanged isn't raised - OnKeyUp is not useful because the Text Value isn't changed at that state.

问题 I try to capture text changes of InputText in Blazor (ServerSide) and then call a async method to check if input is correct coupon code or not. HTML: <EditForm Model="@Basket" OnValidSubmit="@CommitBasket"> Gutscheincode <InputText class="coupon-input checkout-control pristine untouched" @bind-Value="CouponCode" @onchange="CouponCodeChanged"> </InputText> @CouponText </EditForm>` But The CouponCodeChanged isn't raised - OnKeyUp is not useful because the Text Value isn't changed at that state.