前台代码
<form id="form1" runat="server"> <div> <div class="item"> Please input a number: <asp:TextBox runat="server" CssClass="item" ID="txtTextCount"></asp:TextBox> <asp:Button runat="server" ID="btnCreate" Text="Create TextBox List" ValidationGroup="CreateTextBox" OnClick="btnCreate_Click" /> <asp:Button runat="server" ID="btnOK" Text="获取控件值" ValidationGroup="ShowListContent" OnClick="btnOK_Click" /> </div> <div runat="server" id="divControls" class="item"> </div> <div runat="server" id="divMessage"> </div> </div> </form>
后台代码
protected void Page_Load(object sender, EventArgs e) { if (this.IsPostBack) { int txtCount = int.Parse(txtTextCount.Text); // 注意:每次PostBack时,都需要重新动态创建TextBox CreateTextBoxList(txtCount); } } ///<summary> /// Create textbox list ///</summary> ///<param name="num">textbox list count</param> private void CreateTextBoxList(int num) { HtmlGenericControl div; HtmlGenericControl span; TextBox txt; //RegularExpressionValidator rev; for (int i = 0; i < num; i++) { //创建div div = new HtmlGenericControl(); div.TagName = "div"; div.ID = "divTextBox" + i.ToString(); div.Attributes["class"] = "item2"; //创建span span = new HtmlGenericControl(); span.ID = "spanTextBox" + i.ToString(); span.InnerHtml = "Url Address" + (i + 1).ToString() + ":"; //创建TextBox txt = new TextBox(); txt.ID = "txt" + i.ToString(); txt.CssClass = "input"; //创建格式验证控件,并且将其关联到对应的TextBox //rev = new RegularExpressionValidator(); //rev.ID = "rev" + i.ToString(); //rev.ControlToValidate = txt.ID; //rev.Display = ValidatorDisplay.Dynamic; //rev.ValidationGroup = "ShowListContent"; //rev.ValidationExpression = @"(http(s)?://)?([\w-]+\.)+[\w-]+(/[\w- ./?%&=]*)?"; //rev.ErrorMessage = "Invalid url Address!"; //添加控件到容器 div.Controls.Add(span); div.Controls.Add(txt); //div.Controls.Add(rev); divControls.Controls.Add(div); } } protected void btnCreate_Click(object sender, EventArgs e) { txtTextCount.Enabled = false; btnCreate.Enabled = false; } protected void btnOK_Click(object sender, EventArgs e) { TextBox txt; HtmlGenericControl span; StringBuilder sbResult = new StringBuilder(); int txtCount = int.Parse(txtTextCount.Text); //遍历获取动态创建的TextBox们中的Text值 for (int i = 0; i < txtCount; i++) { //注意:这里必须通过上层容器来获取动态创建的TextBox,才能获取取ViewState内容 txt = divControls.FindControl("txt" + i.ToString()) as TextBox; if (txt != null && txt.Text.Trim().Length > 0) { sbResult.AppendFormat("Url Address{0}: {1}.<br />", i + 1, txt.Text.Trim()); } } //遍历获取动态创建的TextBox们中的Text值 for (int i = 0; i < txtCount; i++) { //注意:这里必须通过上层容器来获取动态创建的TextBox,才能获取取ViewState内容 span = divControls.FindControl("spanTextBox" + i.ToString()) as HtmlGenericControl ; if (span != null && span.InnerText.Trim().Length > 0) { sbResult.AppendFormat("Url Address{0}: {1}.<br />", i + 1, span.InnerText.Trim()); } } divMessage.InnerHtml = sbResult.ToString(); }