动态创建的文本框可见性 [英] Dynamic created textbox visibility

问题描述

我曾经在'创建'链接按钮上动态创建2个文本框。但是如果我去（或点击）下一个静态控件，当那个动态创建的文本框及其值不可见时......为什么？



我想保留动态文本框及其在整个页面中的价值，或直到我点击提交按钮。



有人建议解决这个问题吗？请!!



谢谢......

Hi,

I used to create 2 text boxes dynamically on the 'create' link button. But if i go to (or Click)next static controls, when that dynamic created textbox and its value will not be visible...why?

I want to keep that dynamic textboxes and its value throughout the page or till i click on 'Submit' button.

Can anyone suggest to solve this issue? please!!

Thank you...

推荐答案

你的动态创建的控件将在回发中丢失。将控件保留在会话中。你没有指定你的代码。让我们试试下面的示例代码，让我知道

Your dynamically created controls will lost in post back. Keep the control in a session. Yor are not specified your code. Lets try below sample code and let me know

protected void btnAddField_click( Object sender, EventArgs e ) {
        int FieldCount = 0;
        if (ViewState["FieldCount"] != null)
        {
            FieldCount = (int)ViewState["FieldCount"];
        }
        
        Table tbl = new Table();
        if (Session["DynamicTable"] != null)
        {
            tbl = (Table)Session["DynamicTable"];
        }
 
        CheckBox chkNewField = new CheckBox();
        chkNewField.ID = "chkNewField" + FieldCount.ToString();
        chkNewField.Checked = true;
 
        Label LblNewLabel = new Label();
        LblNewLabel.ID = "lblNewLabel" + FieldCount.ToString();
        LblNewLabel.Text = "New Lable";
 
        TextBox TxtNewLabel = new TextBox();
        TxtNewLabel.ID = "TxtNewLabel" + FieldCount.ToString();
 
        Label LblNewValue = new Label();
        LblNewValue.ID = "lblNewValue" + FieldCount.ToString();
        LblNewValue.Text = "New Value";
 
        TextBox TxtNewValue = new TextBox();
        TxtNewValue.ID = "TxtNewValue" + FieldCount.ToString();
 
        TableRow tRow = new TableRow();
 
        TableCell tCell1 = new TableCell();
        TableCell tCell2 = new TableCell();
        tCell2.Attributes.Add("class", "medium");
        TableCell tCell3 = new TableCell();
        tCell3.Attributes.Add("class", "medium");
        TableCell tCell4 = new TableCell();
        TableCell tCell5 = new TableCell();
        tCell5.Attributes.Add("class", "medium");
        TableCell tCell6 = new TableCell();
        tCell6.Attributes.Add("class", "medium");
 
        tCell1.Controls.Add(chkNewField);
        tCell2.Controls.Add(LblNewLabel);
        tCell3.Controls.Add(TxtNewLabel);
        tCell4.Controls.Add(new LiteralControl(""));
        tCell5.Controls.Add(LblNewValue);
        tCell6.Controls.Add(TxtNewValue);
 
        tRow.Cells.Add(tCell1);
        tRow.Cells.Add(tCell2);
        tRow.Cells.Add(tCell3);
        tRow.Cells.Add(tCell4);
        tRow.Cells.Add(tCell5);
        tRow.Cells.Add(tCell6);
 
        tbl.Rows.Add(tRow);
        placeHolderTable.Controls.Remove(tbl);
        placeHolderTable.Controls.Add(tbl);
        Session["DynamicTable"] = tbl;
        FieldCount++;
        ViewState["FieldCount"] = FieldCount;
   }

这篇关于动态创建的文本框可见性的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！