用C#构建html的更好方法是什么

我对C#和web表单非常陌生。我正在构建一个从SQL数据库中提取数据以呈现给查看器的网站。对于构建HTML、使用C#从sql数据库中提取和显示数据，您有什么建议？

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data;
using System.Data.Sql;
using System.Data.SqlClient;
public partial class csusaCentralCallFlows : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
    if (IsPostBack)
    {
        GetCallFlowData();
    }
    else if (!IsPostBack)
    {
        GenerateCallFlowDropDown();
    }
}
private void GenerateCallFlowDropDown()
{
    SqlConnection CFPull = new SqlConnection(System.Web.Configuration.WebConfigurationManager.ConnectionStrings["csusaCDB"].ConnectionString);
    string sql = @"
                SELECT DISTINCT
                    CustomerName
                FROM
                    CustomerData
                ";
    SqlCommand cmd = new SqlCommand(sql, CFPull);
    DataTable dt = new DataTable();
    CFPull.Open();
    dt.Load(cmd.ExecuteReader());
    CFPull.Close();
    string html = "";
    html = "<select name='"CustomerNameDD'" onChange='"SubmitForm()'">";
    html += "<option>Select a Call Flow</option>";
    int rowCount = dt.Rows.Count;
    for (int i = 0; i < rowCount; i++)
    {
        html += "<option>";
        html += dt.Rows[i].ItemArray.GetValue(0);
        html += "</option>";
    }
    html += "</select>";
    DropDownDiv.InnerHtml += html;
}
private void GetCallFlowData()
{
    ResultsDiv.InnerHtml = "";
    string coName = Request.Form["CustomerNameDD"];
    SqlConnection PullDataConn = new SqlConnection(System.Web.Configuration.WebConfigurationManager.ConnectionStrings["csusaCDB"].ConnectionString);
    string sql = @"
                SELECT CustomerData.CustomerName, CallFlowData.contactPhone, CallFlowData.contactEmail, CallFlowData.contactOther
                FROM CallFlowData
                INNER JOIN CustomerData ON CustomerData.CustomerID = CallFlowData.CallFlowID
                WHERE CustomerData.CustomerName LIKE @CustomerName
        ";
    SqlCommand cmd = new SqlCommand(sql, PullDataConn);
    cmd.Parameters.AddWithValue("CustomerName", coName);
    DataTable dt = new DataTable();
    PullDataConn.Open();
    dt.Load(cmd.ExecuteReader());
    PullDataConn.Close();
    int rowCount = dt.Rows.Count;
    string html = "";
    for (int i = 0; i < rowCount; i++)
    {
        html += "<div class='divContainer'>" + 
                    "<table class='resultsTable1'>" + 
                    "<tr><td colspan='2' class='tdCoName'>";
        html += dt.Rows[i].ItemArray.GetValue(0);
        html += "</td></tr>" + 
                    "<tr><td class='contactCat'>HotLine</td>" +
                    "<td class='tdHeadingPadding'>";
        html += dt.Rows[i].ItemArray.GetValue(1);
        html += "</td></tr>" +
                    "<tr><td class='contactCat'>e-Mail</td>" +
                    "<td class='tdHeadingPadding'>";
        html += dt.Rows[i].ItemArray.GetValue(2);
        html += "</td></tr>";
        if (string.IsNullOrEmpty(dt.Rows[i].ItemArray.GetValue(3).ToString()))
        {
            html += "<tr><td colspan='2' style='height:10px;'></td></tr></table></div>";
        }
        else
        {
            html += "<tr><td class='contactCat'>Other</td><td class='tdHeadingPadding'>";
            html += dt.Rows[i].ItemArray.GetValue(3);
            html += "</td></tr><tr><td colspan='2' style='height:10px;'></td></tr></table></div>";
        }
    }
    ResultsDiv.InnerHtml += html;
}
}