Question

我需要为多个SQL服务器运行相同的SQL查询并获得结果进入一个网格视图。

我得到的结果仅适用于一个数据库连接服务器，如何为两台服务器重复网格视图？谢谢大家，

网络配置：

     <connectionStrings>
      <add name="db1" connectionString="my connection string for server 1" />
      <add name="db2" connectionString="my connection string for server 2" />
    </connectionStrings>

asp.net：

     <div>
        <asp:GridView ID="GridView1" runat="server"></asp:GridView>
    </div>

C＃：

string[] arr = new string[2] { "db1", "db2" };

    arr[0] = ConfigurationManager.ConnectionStrings["db1"].ConnectionString;
    arr[1] = ConfigurationManager.ConnectionStrings["db2"].ConnectionString;

    for (int i = 0; i < arr.Length; i++)
    {
        SqlConnection con = new SqlConnection(arr[i]);
        SqlCommand cmd = new SqlCommand("SELECT * from some sys.dm", con);
        con.Open();
        GridView1.DataSource = cmd.ExecuteReader();
        GridView1.DataBind();
        con.Close();
    }

Answer 1

您现在的逻辑将用您的第二个数据覆盖您的第一个数据源。您可能希望将两个数据源组合在一起并将它们绑定到GridView。

尝试这样的事情：

DataTable dtFinal = new DataTable();
foreach (string conString in arr)
{
    DataTable dtTemp = new DataTable();

    using (SqlConnection con = new SqlConnection(conString))
    {
        using (SqlCommand cmd = new SqlCommand("SELECT * from some sys.dm", con))
        {
            con.Open();

            dtTemp.Load(cmd.ExecuteReader());
            dtFinal.Merge(dtTemp);
        }
    }
}

GridView1.DataSource = dtFinal;
GridView1.DataBind();

将1 GridView绑定到sql连接字符串数组

1 个答案: