动态创建的控件回发后丢失数据 [英] Dynamically Created Controls losing data after postback

问题描述

其实，我创建1 文本框在页面加载，并补充说，文本框到面板。 现在，我有一个的LinkBut​​ton 如添加其他。

Actually, I am Creating 1 TextBox on Pageload and adding that TextBox to Panel. Now, I have a LinkButton like Add Another.

我进入了文本文本框，如果需要，我需要创建新的文本框，点击添加其他的LinkBut​​ton 。

I am entering Text in that TextBox and if needed I need to Create New TextBox,by clicking Add Another LinkButton.

其实，我能够得到计数并重新创建文本框。 但是，问题在于，在previously生成文本框我输入的文本丢失。

Actually, I am able to get the count and recreate the TextBoxes. But,the Problem is that, My Entered text in the Previously Generated Textboxes is Missing.

谁能，推荐我一个解决方案吗？

Can Anyone,Suggest me a solution for this?

protected void Page_Load(object sender, EventArgs e)
    {
        try
        {
            if (!IsPostBack)
            {
                for (int i = 0; i < 5; i++)
                {
                    TableRow row = new TableRow();
                    for (int j = 0; j < 5; j++)
                    {
                        TableCell cell = new TableCell();
                        TextBox tb = new TextBox();                        
                        tb.ID = "TextBoxRow_" + i + "Col_" + j;                        
                        cell.Controls.Add(tb);                        
                        row.Cells.Add(cell);
                    }                    
                    Table1.Rows.Add(row);
                }
            }
        }
        catch (Exception ex)
        {
            throw;
        }        
    }

这是一个简单的code，同样code是写在 Button_Click 同时

This is a Sample Code, the same code is written in Button_Click Also

 protected void ASPxButton1_Click(object sender, EventArgs e)
    {
 int k = Table1.Controls.Count;
}

我得到一个计数= 0 在 Button_Click 。

推荐答案

所有您需要重新实例化/重新初始化动态控制每一次之前，或在页面加载事件回发过程中并添加此控制页/表格/占位符再发布的数据就会自动调用方法的LoadPostData由母公司控制被分配给控件。

All you need to re-instantiate / reinitialize dynamic controls before or within page load event each and every time during postback and add this control to page / forms / placeholders then posted data will automatically be assign to the control by calling LoadPostData method by the parent control.

检查本文以及如何编写$ C $下动态控制 - 的 如何保养动态控制的事件，回发在asp.net中数据 的

check the article and how to write code for dynamic control - How to maintain dynamic control events, data during postback in asp.net

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