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者的站点。对于使用 C# 构建 HTML、从 sql 数据库中提取和呈现数据，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;
}
}