C# 基于循环更改参数值

如何根据html表是否可见来循环它们，并为每个循环分配不同的参数值。不确定这是否是正确的方法，但如果可能的话，我希望得到一些建议和一些如何完成以下任务的示例代码

表格示例

Four of these tables so for the second table I have the id="txtLName1"
    <table id="tblEvent1" class="tblAttendee">
                <tr>
                    <td>Last Name:</td>
                    <td><input id="txtLName" runat="server" type="text" name="name" /></td>
                </tr>
                <tr>
                    <td>First Name:</td>
                    <td><input id="txtFName" runat="server" type="text" name="name" /></td>
                </tr>
                <tr>
                    <td>Gender:</td>
                    <td><asp:DropDownList ID="ddlGender" runat="server" Width="65%">
                        </asp:DropDownList></td>
                </tr>
                <tr>
                    <td>Age:</td>
                    <td><asp:DropDownList ID="ddlAge" runat="server" Width="65%">
                        </asp:DropDownList></td>
                </tr>
                <tr>
                    <td>Comments:</td>
                    <td><textarea id="txtComments" runat="server" type="text"></textarea></td>
                </tr>
            </table>

Table1 - visible = true
Table2 - visible = true
Table3 - visible = true
Table4 - visible = false

  using (SqlConnection con = new SqlConnection(connectionString))
        {
            using (SqlCommand cmd = con.CreateCommand())
            {

                cmd.CommandText = "StoredProcedureName";
                cmd.CommandType = CommandType.StoredProcedure;

Loop through tables where visible = true
//first loop
cmd.Parameters.AddWithValue("@LastName", Request.Form["(Table1.LastName"]);
insert new record to database
//second loop
cmd.Parameters.AddWithValue("@LastName", Request.Form["Table2.LastName"]);
insert new record to database using same storedprocedure call
//third loop
cmd.Parameters.AddWithValue("@LastName", Request.Form["Table3.LastName"]);
insert new record to database using same storedprocedure call
No 4th loop because Table is not visible.

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将sql存储过程更改为接受所有参数，但仅在参数不为null时插入到表中

您使用的是web窗体还是mvc？页面上的代码是什么样子的？表是如何填充的？我添加了一个表TomT的示例，这是webforms asp.net C，sql表将根据列出的字段填充。也许我问得不够清楚，但我正试图通过将第一个表插入数据库，然后循环将第二个表作为新记录插入，从而根据我的网页循环中可见的表的数量来确定

(LastName)Smith (firstName)Bob (gender)Male (age)13 (linkid)1
(LastName)Smith (firstName)Timmy (gender)Male (age)7 (linkid)1
(LastName)Smith (firstName)Jenny (gender)Female (age)9 (linkid)1