Question

管理我的网站连接字符串取决于下拉选择。

在web.config我有：

<add name="DUM01" 
     connectionString="Data Source=CHETAN-PC\SQLEXPRESS;Initial Catalog=DUM01;Integrated Security=True" 
     providerName="System.Data.SqlClient"/>
<add name="DUM02" 
     connectionString="Data Source=CHETAN-PC\SQLEXPRESS;Initial Catalog=DUM02;Integrated Security=True" 
     providerName="System.Data.SqlClient"/>

班级档案：

public class ConnectionStr
{
    public int iClientId = 0;
    public string sCon = string.Empty;

    public string StrConnection(string strClientName)
    {
        if (strClientName != string.Empty)
        {
            if (strClientName == "")
            {
                sCon = Convert.ToString(ConfigurationManager.ConnectionStrings[""]);
            }
            else if (strClientName == "DUM02")
            {  
               sCon = Convert.ToString(ConfigurationManager.ConnectionStrings["DUM02"]);

            }
            else if (strClientName == "DUM01")
            {
                sCon = Convert.ToString(ConfigurationManager.ConnectionStrings["DUM01"]);
            }
        }

        return sCon;
    }
}

下拉：

<asp:DropDownList ID="DropDownList1" AutoPostBack="true" runat="server" 
     OnSelectedIndexChanged="DropDownList1_SelectedIndexChanged" CssClass="tr">
     <asp:ListItem Text="--Select--" Value="0"></asp:ListItem>
     <asp:ListItem Text="Simons Holidays" Value=""></asp:ListItem>
     <asp:ListItem Text="RVL Logistics" Value="DUM02"></asp:ListItem>
     <asp:ListItem Text="Simon Shipping" Value="DUM01"></asp:ListItem>
</asp:DropDownList>

Dropdown SelectIndexChanged：

protected void DropDownList1_SelectedIndexChanged(object sender, EventArgs e)
{
    string sClientName = Convert.ToString(DropDownList1.SelectedItem.Value);
    Session["ClientName"] = sClientName;

    ConnectionStr objConnectionStr = new ConnectionStr();
    string strConnection = objConnectionStr.StrConnection(sClientName);

    if (Session["ClientName"] != null)
    {
        sClientName = Convert.ToString(Session["ClientName"]);
    }

    strConnection = objConnectionStr.StrConnection(sClientName);

    SqlConnection scon1 = new SqlConnection(strConnection);
}

当我需要使用任何网络表单时，我使用：

public partial class Webforms_VendorsWithBoot : System.Web.UI.Page
{
    public string sClientName = string.Empty;
    public static string strConnection = string.Empty;
    public static DataTable TableData = new DataTable();
    public static string brcode = string.Empty;

   protected void Page_Load(object sender, EventArgs e)
    {
        if (Session["ClientName"] != null)
        {
            sClientName = Convert.ToString(Session["ClientName"]);
        }

        ConnectionStr objConnectionStr = new ConnectionStr();
        strConnection = objConnectionStr.StrConnection(sClientName);
    }
}

现在情况是数据库是DUM01被选中我需要DUM02同时可用，反之亦然，因为两个数据库中的某些表是相同的，在某些webforms中我需要在两个数据库中插入数据。

如何解决这个问题？提前谢谢..

Answer 1

我建议您使用数据库复制。你说你有相同的数据库与相同的表。 Check this out。复制可帮助您管理主数据库和辅助数据库中的数据。您不必担心用于插入数据的数据库。这将自动反映出来。

Answer 2

像这样你可以创建数据库结构

同时选择connectionstring

2 个答案: