.NET动态生成textbox控件

Question

本帖最后由 shengrl2007 于 2013-07-09 15:10:10 编辑

Answer 1

贴上DynamicTable1的代码，Table2是个什么东西

Answer 2

 /// <summary>
    /// 动态生成逻辑楼层table
    /// </summary>
    protected void DynamicTable2(int floor)
    {
        int I, J;
        for (I = 0; I < 1; I++)//6行
        {
            TableRow Row = new TableRow();
            for (J = 1; J < floor; J++)//4列
            {
                TableCell Cell = new TableCell();
                TextBox tb = new TextBox();
                tb.Width = 18;
                tb.ID = "tb2" + J.ToString();
                //tb.Text = J.ToString() + "楼  ";
                Cell.Controls.Add(tb);                Row.Cells.Add(Cell);
            }
            Table2.Rows.Add(Row);
        }    }

Answer 3

  protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            LogicFloor();
           
        } 
    }
    /// <summary>
    /// 动态生成物理楼层table
    /// </summary>
    protected void DynamicTable1(int floor)
    {
        int I, J;
        for (I = 0; I < 1; I++)//1行
        {
            TableRow Row = new TableRow();
            for (J = 1; J < floor; J++)//j列
            {
                TableCell Cell = new TableCell();
                TextBox tb = new TextBox();
                tb.Width = 18;
                //tb.Text = J.ToString() + "楼  ";
                tb.Text = J.ToString();
                Cell.Controls.Add(tb);
                Row.Cells.Add(Cell);            }
            Table1.Rows.Add(Row);
        }    }
    /// <summary>
    /// 动态生成逻辑楼层table
    /// </summary>
    protected void DynamicTable2(int floor)
    {
        int I, J;
        for (I = 0; I < 1; I++)//6行
        {
            TableRow Row = new TableRow();
            for (J = 1; J < floor; J++)//4列
            {
                TableCell Cell = new TableCell();
                TextBox tb = new TextBox();
                tb.Width = 18;
                tb.ID = "tb2" + J.ToString();
                //tb.Text = J.ToString() + "楼  ";
                Cell.Controls.Add(tb);                Row.Cells.Add(Cell);
            }
            Table2.Rows.Add(Row);
        }    } 
    protected void drpFloor_SelectedIndexChanged(object sender, EventArgs e)
    {
        int drpFloor = int.Parse(this.drpFloor.SelectedValue);
        int drpFloor = int.Parse(this.drpFloor.SelectedValue);
        //ViewState["drpFloor"] = drpFloor.ToString();
        DynamicTable1(drpFloor + 1); 
        DynamicTable2(drpFloor + 1); 
        TextBox TempTextBox;
        TempTextBox = ((TextBox)Table2.FindControl("tb21"));
        TempTextBox.Text = "1";    }
     /// <summary>
    /// 确定操作按钮
    /// </summary>
    /// <param name="sender"></param>
    /// <param name="e"></param>
    protected void btnConfirm_Click(object sender, EventArgs e)
    {
         
        TextBox TempTextBox1;
        TempTextBox1 = ((TextBox)Table2.FindControl("tb21"));
        TempTextBox1.Text = "2";
    }
    /// <summary>
    /// 物理楼层最高值
    /// </summary>
    void LogicFloor()
    {
        ArrayList aList = new ArrayList();        for (int i = 7; i < 51; i++)
            aList.Add(i);
        drpFloor.DataSource = aList;
        drpFloor.DataBind();
    
    }
把代码都贴上了，便于大家分析。

Answer 4

 <tr>
                <td>
                    物理最高楼层
                </td>
                <td>
                    <asp:DropDownList ID="drpFloor" runat="server" AutoPostBack="true" Width="150px"
                        OnSelectedIndexChanged="drpFloor_SelectedIndexChanged">
                    </asp:DropDownList>
                </td>
            </tr><tr>
                <td width="100px">
                    物理楼层
                </td>
                <td>
                    <asp:Table ID="Table1" runat="server">
                    </asp:Table>
                </td>
                <tr>
                    <td width="100px">
                        逻辑楼层
                    </td>
                    <td>
                        <asp:Table ID="Table2" runat="server">
                        </asp:Table>
                    </td>
                </tr>
   </tr>
 //前台的比较简单   

Answer 5

你这个问题是因为table控件不能保存其状态的原因，之前你添加的TableRow，TableCell，在页面PostBack之后，这些会丢失掉的。也就是说需要在Postback之后重新创建才行，不像Textbox那样，输入了值之后就可以一直保存在VIEWSTATE里面。

Answer 6

/// <summary>
/// 
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected void Page_Load(object sender, EventArgs e) {
if (!IsPostBack) {
LogicFloor();
} int floor; if (!int.TryParse(this.drpFloor.SelectedValue, out floor)) {
floor = 0;
} if (floor > 0) {
DynamicTable1(floor + 1);
DynamicTable2(floor + 1);
}
}
/// <summary>
/// 
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected void drpFloor_SelectedIndexChanged(object sender, EventArgs e) {
//int drpFloor = int.Parse(this.drpFloor.SelectedValue);
////int drpFloor = int.Parse(this.drpFloor.SelectedValue);
////ViewState["drpFloor"] = drpFloor.ToString();
//DynamicTable1(drpFloor + 1);
//DynamicTable2(drpFloor + 1);
//TextBox TempTextBox;
//TempTextBox = ((TextBox)Table2.FindControl("tb21"));
//TempTextBox.Text = "1";
}改一下这连个事件处理方法