Question

我是C＃和Web表单的新手。我正在构建一个站点，从SQL数据库中提取数据以呈现给查看器。您有什么建议用于使用C＃构建HTML，从sql数据库中提取数据？

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;

}
}

Answer 1

您可以使用ASP.Net Web应用程序或ASP.Net Web表单应用程序来执行此操作。如果应该处理非常复杂的逻辑和因为期望很高并且需要运行更长时间.Net MVC应用程序将是一个不错的选择（这是一个很开始但很灵活的工作）。这是一个很好的教程链接..

http://www.youtube.com/playlist?list=PL6n9fhu94yhXQS_p1i-HLIftB9Y7Vnxlo

用C＃构建我的html会有什么更好的方法？

1 个答案: