实际上,我在 Pageload 上创建 1 个 TextBox 并将该 TextBox 添加到 Panel.现在,我有一个 LinkButton,例如 Add Another.
Actually, I am Creating 1 TextBox on Pageload and adding that TextBox to Panel. Now, I have a LinkButton like Add Another.
我正在该 TextBox 中输入文本,如果需要,我需要通过单击 Add Another LinkButton 来创建新的 TextBox.
I am entering Text in that TextBox and if needed I need to Create New TextBox,by clicking Add Another LinkButton.
实际上,我可以获取计数并重新创建 TextBoxes.但是,问题是,我在以前生成的 Textboxes 中输入的文本丢失了.
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.
任何人都可以给我一个解决方案吗?
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; } }这是一个示例代码,同样的代码写在 Button_Click 也
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; }我在 Button_Click 上得到一个 Count=0.
I am getting a Count=0 on Button_Click.
推荐答案您只需在每次回发期间在页面加载事件之前或之内重新实例化/重新初始化动态控件并将此控件添加到页面/表单/占位符.然后,通过父控件调用LoadPostData方法,将发布的数据自动分配给控件.
All you need to do is 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, the posted data will automatically be assigned to the control by calling the LoadPostData method by the parent control.
查看文章以及如何编写动态控制代码 -如何维护动态控制事件,asp中回发期间的数据
check the article and how to write code for dynamic control - How to maintain dynamic control events, data during postback in asp
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回发后动态创建的控件丢失数据
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