Question

我正在以编程方式创建一个控制表，我希望在用户单击按钮后获取值。

该表有三列，{Title（ DropDownList ），FName（ TextBox ），LName（ TextBox ）}和两行。

我正在获取FName，LName的值没有问题，但是我得到了Title的错误值，这是一个DropDownList。它为我提供了两个标题，即第二列的选定值。

更清楚，

第一行 - ＆gt;先生，Foo，Bar

第二行

- ＆gt;夫人，Foo，Bar

用户点击我的按钮后

第一行 - ＆gt; Mrs ，Foo，Bar

第二行 - ＆gt;夫人，Foo1，Bar。

这是创建表的方法

private void SetPassengerDetailsTable(int roomIdentity, int? adults,
        int? children, int? infants, bool setLeader = false) {
        var leaderIsSet = false;
        var roomTable = new Table();
        roomTable.ID = "PassengerDetailsTBL_" + roomIdentity;
        var trHeader = new TableHeaderRow();
        var tcTitle = new TableCell();
        tcTitle.Controls.Add(new Label() { Text = "<b>Title</b>" });
        trHeader.Cells.Add(tcTitle);

        var tcFName = new TableCell();
        tcFName.Controls.Add(new Label() { Text = "<b>First Name</b>" });
        trHeader.Cells.Add(tcFName);

        var tcLName = new TableCell();
        tcLName.Controls.Add(new Label() { Text = "<b>Last Name</b>" });
        trHeader.Cells.Add(tcLName);

        var tcType = new TableCell();
        tcType.Controls.Add(new Label() { Text = "<bType</b>" });
        trHeader.Cells.Add(tcType);

        roomTable.Rows.Add(trHeader);

        var listItems = new ListItem[6];
        listItems[0] = new ListItem("", "") { Selected = true };
        listItems[1] = new ListItem("Mr", "Mr");
        listItems[2] = new ListItem("Mrs", "Mrs");
        listItems[3] = new ListItem("Miss", "Miss");
        listItems[4] = new ListItem("Infant", "Inf");
        listItems[5] = new ListItem("Child", "Master");


        if (adults != null || adults > 0) {
            for (int i = 1; i <= adults; i++) {
                var trBody = new TableRow();
                var ddl = new DropDownList();
                var leadAdultRowID = setLeader && !leaderIsSet ? "leadadult" : "adult";
                ddl.ID = "room" + roomIdentity + leadAdultRowID + i + "Title";
                ddl.Items.AddRange(listItems);

                var tcTitleValue = new TableCell();
                tcTitleValue.Controls.Add(ddl);
                trBody.Cells.Add(tcTitleValue);

                var tcFNameValue = new TableCell();
                tcFNameValue.Controls.Add(new TextBox() { ID = "room" + roomIdentity + "adult" + i + "FName", Width = 170 });
                trBody.Cells.Add(tcFNameValue);

                var tcLNameValue = new TableCell();
                tcLNameValue.Controls.Add(new TextBox() { ID = "room" + roomIdentity + "adult" + i + "LName", Width = 170 });
                trBody.Cells.Add(tcLNameValue);

                var tcTypeValue = new TableCell();
                var leadAdult = setLeader && !leaderIsSet ? "Lead Adult" : "Adult";
                tcTypeValue.Controls.Add(new Label() { Text = leadAdult });
                trBody.Cells.Add(tcTypeValue);
                roomTable.Rows.Add(trBody);

                if (setLeader)
                    leaderIsSet = true;
            }
        }

        if (children != null || children > 0) {
            for (int i = 1; i <= children; i++) {
                var trBody = new TableRow();
                var ddl = new DropDownList();
                ddl.ID = "room" + roomIdentity + "child" + i + "Title";
                ddl.Items.AddRange(listItems);

                var tcTitleValue = new TableCell();
                tcTitleValue.Controls.Add(ddl);
                trBody.Cells.Add(tcTitleValue);

                var tcFNameValue = new TableCell();
                tcFNameValue.Controls.Add(new TextBox() { ID = "room" + roomIdentity + "child" + i + "FName", Width = 170 });
                trBody.Cells.Add(tcFNameValue);

                var tcLNameValue = new TableCell();
                tcLNameValue.Controls.Add(new TextBox() { ID = "room" + roomIdentity + "child" + i + "LName", Width = 170 });
                trBody.Cells.Add(tcLNameValue);

                var tcTypeValue = new TableCell();
                tcTypeValue.Controls.Add(new Label() { Text = "Child" });
                trBody.Cells.Add(tcTypeValue);
                roomTable.Rows.Add(trBody);
            }
        }

        if (infants != null || infants > 0) {
            for (int i = 1; i <= infants; i++) {
                var trBody = new TableRow();
                var ddl = new DropDownList();
                ddl.ID = "room" + roomIdentity + "infan" + i + "Title";
                ddl.Items.AddRange(listItems);

                var tcTitleValue = new TableCell();
                tcTitleValue.Controls.Add(ddl);
                trBody.Cells.Add(tcTitleValue);

                var tcFNameValue = new TableCell();
                tcFNameValue.Controls.Add(new TextBox() { ID = "room" + roomIdentity + "infan" + i + "FName", Width = 170 });
                trBody.Cells.Add(tcFNameValue);

                var tcLNameValue = new TableCell();
                tcLNameValue.Controls.Add(new TextBox() { ID = "room" + roomIdentity + "infan" + i + "LName", Width = 170 });
                trBody.Cells.Add(tcLNameValue);

                var tcTypeValue = new TableCell();
                tcTypeValue.Controls.Add(new Label() { Text = "Infant" });
                trBody.Cells.Add(tcTypeValue);
                roomTable.Rows.Add(trBody);
            }
        }
        PassengerDetailsPH.Controls.Add(roomTable);
    }

由于

Answer 1

仔细检查为您的下拉列表生成哪些客户端ID。

如果表格被正确呈现（正确的ID必须是唯一的），那么读取的代码就是从错误的元素中读取。

Answer 2

为DropDownList

的每个实例创建一个新的listItems列表

var ddlItems = listItems.ToArray();

ddl.Items.Addrange(ddlItems);

（你看过GridView控件吗？）

从以编程方式生成的表中获取数据

2 个答案: