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我正在使用 ASP.NET C# 构建一个 Web 应用程序。我有一个图像网址的字符串数组。我正在尝试在页面上显示所有这些图标。它们是从 Web api 检索的,因此它们每次都不同,大约有 300 个。

我在https://www.dotnetperls.com/htmltextwriter上找到了这个例子。

IconWriter iconWriter = new IconWriter();
class IconWriter
{
    static string[] words = { "Sam", "Dot", "Perls" };

    static string GetDivElements()
    {
        // Initialize StringWriter instance.
        StringWriter stringWriter = new StringWriter();

        // Put HtmlTextWriter in using block because it needs to call Dispose.
        using (HtmlTextWriter writer = new HtmlTextWriter(stringWriter))
        {
            // Loop over some strings.
            foreach (var word in words)
            {
                // Some strings for the attributes.
                string classValue = "ClassName";
                string urlValue = "http://www.dotnetperls.com/";
                string imageValue = "image.jpg";

                // The important part:
                writer.AddAttribute(HtmlTextWriterAttribute.Class, classValue);
                writer.RenderBeginTag(HtmlTextWriterTag.Div); // Begin #1

                writer.AddAttribute(HtmlTextWriterAttribute.Href, urlValue);
                writer.RenderBeginTag(HtmlTextWriterTag.A); // Begin #2

                writer.AddAttribute(HtmlTextWriterAttribute.Src, imageValue);
                writer.AddAttribute(HtmlTextWriterAttribute.Width, "60");
                writer.AddAttribute(HtmlTextWriterAttribute.Height, "60");
                writer.AddAttribute(HtmlTextWriterAttribute.Alt, "");

                writer.RenderBeginTag(HtmlTextWriterTag.Img); // Begin #3
                writer.RenderEndTag(); // End #3

                writer.Write(word);

                writer.RenderEndTag(); // End #2
                writer.RenderEndTag(); // End #1
            }
        }
    }
}

它工作得很好,但是,我在 Page_Load 方法中有一个名为 iconsList 的列表,我想用类似在 Page_Load 中设置 `iconsList 之后的内容替换该static string[] words = { "Sam", "Dot", "Perls"};string[] icons = iconsList.ToArray();。到目前为止,我可以调用 iconWriter.GetDivElements() 并且它将返回正确构建的 html,但仅限于给定的字符串数组。

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1 回答 1

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您可以向 GetDivElements 方法添加参数,该方法接受图标列表(字符串列表),并可用于创建数组并删除静态字符串 [] 单词,因为它不需要。例如:

public class IconWriter
{
    static string GetDivElements(List<string> iconsList)
    {
        string[] icons = iconsList.ToArray();
        // Initialize StringWriter instance.
        StringWriter stringWriter = new StringWriter();
        // other stuff
    }
}

您的页面 Page_Load 方法如下:

public Page_Load()
{
    List<string> iconsList = GetIconsList();
    string html = IconWriter.GetDivElements(iconsList);
}
于 2017-11-04T10:16:24.693 回答