Question

Oracle 11g数据库连接正常，但GridView中没有显示数据，请帮忙！ 以下代码位于页面加载代码中

        OracleConnection con = new OracleConnection();
        con.ConnectionString = "DATA SOURCE=DEMODB;USER ID=SYSTEM;password=admin";
        con.Open();
        string sql = "select * from Insurance";
        OracleCommand comm = new OracleCommand(sql, con);
        OracleDataAdapter da = new OracleDataAdapter(comm);
        DataSet ds = new DataSet();
        da.Fill(ds, "Insurance");
        GridView1.DataSource = ds.Tables["Insurance"];
        GridView1.DataBind();
        con.Close();

这是页面的源代码：

        </asp:Label>
        <asp:GridView ID="GridView1" runat="server">
        </asp:GridView>
        <asp:Button ID="Button1" runat="server" OnClick="Button1_Click" Text="Button" />
        <asp:SqlDataSource ID="DataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:ConnectionString %>" 
          ProviderName="<%$ConnectionStrings:ConnectionString.ProviderName %>" 
          SelectCommand="SELECT &quot;SSN&quot;, &quot;RID&quot;, &quot;EID&quot;, &quot;TYPE&quot;, &quot;COST&quot; FROM &quot;TREATMENT&quot;">
        </asp:SqlDataSource>
    </div>

Answer 1

尝试使用此代替Page_Load代码并完全删除<asp:SqlDataSource。

DataTable results = new DataTable();
using (OracleConnection con = new OracleConnection("DATA SOURCE=DEMODB;USER ID=SYSTEM;password=admin") {
  con.Open();
  using (OracleCommand comm = new OracleCommand("select * from Insurance", con)) {
    results.Load(comm.ExecuteReader());
  }
}        
GridView1.DataSource = results;
GridView1.DataBind();

GridView应该简单：

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

表格数据未在ASP .NET Gridview中加载

1 个答案: