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如何在 ASPTokenInput 上预填充一些标签

发布于 2025-01-07 17:30:06 字数 201 浏览 1 评论 0原文

您好，我正在使用 ASPTokenInput 库，从下面的 url 中找到 https://github.com/harindaka/ASPTokenInput/wiki 任何人都可以帮助我如何在页面加载和部分回发时预填充一些令牌控件

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老街孤人 2025-01-14 17:30:06

必须对代码进行一些调整，看起来这个功能没有在原始代码中得到充分测试。我尝试将项目添加到“项目”中，它们会在页面加载时显示，但如果我添加新项目，它们会立即消失，因为它们没有存储在隐藏字段中。

代码修改后，您可以执行以下操作，其中 tiTest2 是 ASPTokenInput 控件（抱歉，没有 tiTest2.Items.Add 支持）：

            List<ASPTokenInput.Item> items = new List<ASPTokenInput.Item>();
            items.Add(new ASPTokenInputLib.ASPTokenInput.Item() { id = "United States", name = "United States" });
            items.Add(new ASPTokenInputLib.ASPTokenInput.Item() { id = "Brazil", name = "Brazil" });


            tiTest2.Items = items;

您需要按如下方式更改代码：

   //Change the Items property to the following
   public List<Item> Items
    {
        get
        {
            this.EnsureChildControls();
            if (String.IsNullOrEmpty(_hfPersist.Value)) return new List<Item>();

            else return (List<Item>)new JavaScriptSerializer().Deserialize<IList<Item>>(_hfPersist.Value);
        }
        set
        {
            this.EnsureChildControls();
            _hfPersist.Value = new JavaScriptSerializer().Serialize(value); 
        }
    }

  //Empty out "OnLoad", so it looks like this.  The functionality it was providing we don't need anymore
    protected override void OnLoad(EventArgs e)
    {
        base.OnLoad(e);

    }

Had to tweak the code a bit, it looks like this feature wasn't fully tested in the original code. I tried just adding items to "Items" and they showed up on page load, but would disappear immediately if I added a new item because they were not being stored in the hidden field.

After the code modifications you can do the following, where tiTest2 is an ASPTokenInput control (sorry, no tiTest2.Items.Add support):

            List<ASPTokenInput.Item> items = new List<ASPTokenInput.Item>();
            items.Add(new ASPTokenInputLib.ASPTokenInput.Item() { id = "United States", name = "United States" });
            items.Add(new ASPTokenInputLib.ASPTokenInput.Item() { id = "Brazil", name = "Brazil" });


            tiTest2.Items = items;

You'll need to change the code as follows:

   //Change the Items property to the following
   public List<Item> Items
    {
        get
        {
            this.EnsureChildControls();
            if (String.IsNullOrEmpty(_hfPersist.Value)) return new List<Item>();

            else return (List<Item>)new JavaScriptSerializer().Deserialize<IList<Item>>(_hfPersist.Value);
        }
        set
        {
            this.EnsureChildControls();
            _hfPersist.Value = new JavaScriptSerializer().Serialize(value); 
        }
    }

  //Empty out "OnLoad", so it looks like this.  The functionality it was providing we don't need anymore
    protected override void OnLoad(EventArgs e)
    {
        base.OnLoad(e);

    }

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