在ASP.Net web表单中生成动态文本框的最佳方式是什么？

Question

我需要生成动态文本框(最多5-10 )根据用户的反应。那么，就性能和速度而言，最好的方法是什么呢？

Answer 1

这里有一个非常有用的链接，并解释了为什么

link from here

• 始终在Page_PreInit()中添加动态控件
• 在动态加载时始终分配ID

例如

protected void Page_PreInit(object sender, EventArgs e) 
{ 
        Control c= LoadControl("./WebUserControl2.ascx"); 
        i=i+1; 
        c.ID= i.ToString(); 
        PlaceHolder1.Controls.Add(c); 
} 

或

protected void Page_PreInit(object sender, EventArgs e) 
{ 
         LinkButton button1 = new LinkButton(); 
         button1.ID = "button1" 
         button1.Text = "button1" 
         PlaceHolder1.Controls.Add(button1); 
}

Answer 2

int n=5;
for (int i=0;i<n;i++)
{
TextBox MyTextBox=new TextBox();
//Assigning the textbox ID name 
MyTextBox.ID = "tb" +""+ ViewState["num"] + i;
MyTextBox.Width = 540;
MyTextBox.Height = 60;
MyTextBox.TextMode = TextBoxMode.MultiLine;
this.Controls.Add(MyTextBox);
}

对于MVC，此链接可能会帮助您...http://www.codeproject.com/Articles/434886/Dynamically-adding-controls-on-a-hierarchical-stru

Answer 3

以这种方式TRy

for (int j = 0; j < 10; j++)
            {                  

              //Create Dynamic textboxes with required field validator .

                TextBox tbChildFirstName = new TextBox();
                Label lblChildFirstName = new Label();
                lblChildFirstName.ID = "lblChildFirstName" + j;
                lblChildFirstName.Text = "Children FirstName";
                lblChildFirstName.Width = 200;
                lblChildFirstName.SkinID = "Outlabel";
                tbChildFirstName.ID = "txtChildFirstName" + j;
                tbChildFirstName.Text = "Hi hello";
                pnlChildDetail.Controls.Add(lblChildFirstName);
                pnlChildDetail.Controls.Add(tbChildFirstName);
                RequiredFieldValidator rqf = new RequiredFieldValidator();
                rqf.ID = "rqf" + i;
                pnlChildDetail.Controls.Add(rqf);
                rqf.ControlToValidate = "txtChildFirstName" + j;
                rqf.ErrorMessage = "Children FirstName is required";
                rqf.Display = ValidatorDisplay.Dynamic;
                rqf.ValidationGroup = "EligibilityCheck";
                rqf.SetFocusOnError = true;
                rqf.Text = "*";
                tbChildFirstName.Attributes.Add("runat", "server");
                pnlChildDetail.Controls.Add(GetLiteral("<br/>"));
                pnlChildDetail.Controls.Add(GetLiteral("<br/>"));

            }

public Literal GetLiteral(string text)
    {
        Literal rv = default(Literal);
        rv = new Literal();
        rv.Text = text;
        return rv;
    }

Aspx

<asp:Panel ID="pnlChildDetail" Style="text-align: left; padding-left: 10px" Width="100%"
        runat="server">
    </asp:Panel>

有关创建动态textbox表单数据库数据计数以及如何获取动态textbox值的更多详细信息?：请参阅my blog