动态添加文本框和标签 [英] Dynamically add textboxes and labels

问题描述

我是初学者.我有一个aspx页面，我有一个mysql查询，该查询对数据库表中的条目数量进行计数.对于数据库中的每个条目，我需要在页面上添加一个标签和一个文本框.有谁知道如何做到这一点?任何帮助将不胜感激.

Hi i am a beginner programmer. I have a aspx page and i have a mysql query that counts the amount of entries in the table in database. For each entry in the database i need to have a label and a textbox added to the page. Does anyone know how to do this? Any help will be much appreciated.

推荐答案

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重要的是，请参见

Best suited for you[^]

And importantly, see this[^] also.

您可以看到此

您可以使用占位符根据数据库中的数据在运行时创建控件.

使用PlaceHolder ...

像:

You can use Place Holder to create Controls at Runtime according to the Data into your database.

Use PlaceHolder...

like :

string s1 = "your query ";
SqlDataAdapter ad1 = new SqlDataAdapter(s1,con);
DataSet ds1 = new DataSet();
ad1.Fill(ds1);

if (ds1.Tables[0].Rows.Count != 0)
{
    for (int i = 0; i < ds1.Tables[0].Rows.Count; i++)
    {
        Label l = new Label(); // one label created at Runtime
        Label lbl = new Label(); // second label created at runtime
        l.ID = "l" + i.ToString(); // give ID to the first Label
        l.ForeColor = System.Drawing.Color.Orange;
        lbl.ID = "lbl" + i.ToString(); // give ID to the Second Label

        l.Text = ds1.Tables[0].Rows[i][0].ToString(); // set text to the first label
        lbl.Text = ds1.Tables[0].Rows[i][1].ToString(); // set text to the second label
        PlaceHolder1.Controls.Add(l); // add control to the Placeholder
        PlaceHolder1.Controls.Add(new LiteralControl("<br />")); // use for break one line
        PlaceHolder1.Controls.Add(lbl); // add control to the placeholder
        PlaceHolder1.Controls.Add(new LiteralControl("<br />"));
    }

}

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