如何在我的占位符中生成当前和以前的Textboes [英] How both present and previous Textboes will be generated in my place holder

问题描述

嗨

我有一个下拉列表ddlProduct名称和数量文本框。当我选择产品名称并在我的文本框中写入数量并单击Button1时，根据数量值在我的占位符中生成多个文本框。但当我再次选择另一个产品和数量并单击按钮1时，当前数量文本框正在生成，而不显示以前选择的文本框。我需要生成现有产品和之前产品的textboes。两者都应该出现在我的占位符中。我该怎么做呢。请帮助。

 受保护  void  Button1_Click（ object  sender，EventArgs e）
 { 
 
 {
  if （txtQuantity.Text！=  < span class =code-string>）
 {
  for （ int  i =  0 ; i <  Convert.ToInt16（txtQuantity.Text）; i ++ ）
 {
 
 
标签la = 新标签（）; 
 la.Text = ddlProductName.SelectedItem.Value + i.ToString（）; 
 la.ID =   abc + i.ToString（）; 
 
 PlaceHolder1.Controls.Add（la）; 
 
  //   la = FindControl（String.Format（i））as Label;  
 
 
 
 
 TextBox txtbox =  new  TextBox（）; 
 txtbox.Text =   Textbox  -  + i.ToString（）; 
 
 
 PlaceHolder1.Controls.Add（ new  LiteralControl（ < input id ='txt'name ='Textbox + i +  'type ='text'/>））; 
 PlaceHolder1.Controls.Add（ new  LiteralControl（ < br />））; 
 
} 
} 
} 
 
} 

解决方案

< blockquote> on post动态控件将丢失。



点击链接



如何在ASP.NET中动态创建控件并从中检索值 [ ^ ]



http：/ /www.aspsnippets.com/Articles/Dynamic-Controls-Made-Easy-in-ASP.Net.aspx [ ^ ]

Hi
I have a dropdownlist ddlProduct Name and quantity text box. When I Select a Product Name and write the quantity in my textboxes and click the Button1 that number of textboxes are generating in my place holder according to quantity value. but when I am again go to choose the another product and quantity and click the Button 1 then the current quantity textboxes are generating and not showing the previous selected textboxes. I need to generate the textboes of present product and previous. Both should appear in my place holder.How will i Do it. Kindly Help.

protected void Button1_Click(object sender, EventArgs e)
    {

        {
            if (txtQuantity.Text != "")
            {
                for (int i = 0; i < Convert.ToInt16(txtQuantity.Text); i++)
                {
                  
                    
                        Label la = new Label();
                        la.Text = ddlProductName.SelectedItem.Value + i.ToString();
                        la.ID = "abc" + i.ToString();

                        PlaceHolder1.Controls.Add(la);

                        //la = FindControl(String.Format(i)) as Label;




                        TextBox txtbox = new TextBox();
                        txtbox.Text = "Textbox - " + i.ToString();


                        PlaceHolder1.Controls.Add(new LiteralControl("<input id='txt' name='Textbox" + i + "'type='text'  />"));
                        PlaceHolder1.Controls.Add(new LiteralControl("<br />"));

                    }
                }
            }
        
    }

解决方案

on post dynamic controls will lost.

follow the link

How to create controls dynamically in ASP.NET and retrieve values from it[^]

http://www.aspsnippets.com/Articles/Dynamic-Controls-Made-Easy-in-ASP.Net.aspx[^]

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