phi*_*hil 5 blazor blazor-server-side
在 Blazor 的早期版本中,有一个带有和属性IHtmlInputElement的接口。selectionStartselectionEnd
谁能解释一下如何使用它们从 C# 中的文本输入控件中获取选定的文本?
更新 这是我到目前为止所拥有的。
@page "/selectedtext"
@inject IJSRuntime JsRuntime
<h3>TextSelection</h3>
<input type="text" placeholder="Type here" @ref="myTextInput"/>
<button class="btn btn-primary" @onclick="@(async () => await GetSelectionStart(myTextInput))"></button>
@code {
public ElementReference myTextInput { get; set; }
public async Task GetSelectionStart(ElementReference element)
{
int pos = await JsRuntime.InvokeAsync<int>("GetSelectedStart", element);
}
}
// myscript.js
{
getSelectedStart : function (element) {
return element.selectionStart;
}
}
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@page "/selectedtext"
@inject IJSRuntime JsRuntime
<h3>TextSelection</h3>
<input type="text" placeholder="Type here" @ref="myTextInput"/>
<button class="btn btn-primary" @onclick="@(async () => await GetSelectionStart(myTextInput))">Get Position</button>
@code {
public ElementReference myTextInput { get; set; }
public async Task GetSelectionStart(ElementReference element)
{
int pos = await JsRuntime.InvokeAsync<int>("getSelectedStart", element);
}
}
// myscript.js
window.getSelectedStart = (element) => {
return element.selectionStart;
}
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