Asp.net 尋找不到動態建立的控制項之解決辦法【整理】

方法一：

要想動態添加的控制項能"保持",簡單的做法就是在page_init裡載入,而不是page_load

C# code

protected override void OnInit(EventArgs e)    {        try         {            //在這裡載入控制項            base.OnInit(e);        }        catch (Exception MyEx)        {                MyHelper.ShowExceptionMeessage(MyEx);        }        finally        {        }    }

方法二：

protected void Page_Load(object sender, EventArgs e){    if (!IsPostBack)    {        LoadTextBox();    }}protected override void LoadViewState(object savedState){    base.LoadViewState(savedState);    if (IsDynamicLoadControl)    {        LoadTextBox();    }}private void LoadTextBox()             {                 for (int i = 0; i < 10; i++)    {         TextBox input = new TextBox();         input.ID = "input" + i.ToString();         this.form1.Controls.Add(input);    }    IsDynamicLoadControl = true;}public bool IsDynamicLoadControl{    get    {        object dynamic = ViewState["IsDynamicLoadControl"];        return dynamic == null ? false : true;    }    set    {        ViewState["IsDynamicLoadControl"] = value;    }}

 

TextBox tb = this.FindControl("input0") as TextBox;ClientScript.RegisterStartupScript( this.GetType(), "", string.Format("<script>alert('{0}')</script>",tb.Text));

 

最後可以進行測試一下：