Question

我有以下代码：

[WebMethod]
public static string GenerateHtml(string id)
{
    //return id;
    DataView vwMain2;
    try
    {
        DbProviderFactory dbf = DbProviderFactories.GetFactory();
        using (IDbConnection con = dbf.CreateConnection())
        {
            string sSQL;
            sSQL = "select top 20                " + ControlChars.CrLf
                 + " ASSISTING_FILE_ID, DATE_ENTERED, CLIENT_CLAIM_NUM, PRIMARY_INSURED, PRIMARY_CLAIMANT, LOB_ID, FILE_STATUS, BRANCH_NAME," + ControlChars.CrLf
                 + " OWNERS_FIRST_NAME, OWNERS_LAST_NAME, OWNERS_NAME, OWNERS_EMAIL, OWNERS_OFFICE_PHONE, OWNERS_FAX_PHONE, OWNERS_CELL_PHONE" + ControlChars.CrLf
                 + "  from vwFILES_DetailViewWithOwners" + ControlChars.CrLf
                 + " where 1 = 1                    " + ControlChars.CrLf;
            //+ " where 1 = 1 and WEB_USER_ID = '" + Security.USER_ID.ToString() + "'" + ControlChars.CrLf;
            using (IDbCommand cmd = con.CreateCommand())
            {
                cmd.CommandText = sSQL;

                using (DbDataAdapter da = dbf.CreateDataAdapter())
                {
                    ((IDbDataAdapter)da).SelectCommand = cmd;
                    using (DataTable dt = new DataTable())
                    {
                        da.Fill(dt);
                        vwMain2 = dt.DefaultView;
                        GridView2.DataSource = vwMain2;

                            GridView2.DataBind();

                    }
                }
            }
        }
    }
    catch (Exception ex)
    {
        SplendidError.SystemError(new StackTrace(true).GetFrame(0), ex.Message);
        //lblError.Text = ex.Message;
    }

}

我的ASPX页面中有以下内容：

<asp:GridView ID="GridView2" runat="server">
                </asp:GridView>

当我尝试在后面的代码中引用GridView2时，它说：“非静态字段，方法或属性GridView2需要一个对象引用。”

如何解决此问题，以便在调用GenerateHtml时创建网格视图，或是否有更好的方法？

Answer 1

调用WebMethod时，您不会引用任何页面元素。请记住，您正在调用静态方法。要访问代码隐藏中的任何页面级元素，您必须通过.NET页面生命周期，在那里发生所有“魔法”。

看看这个问题，找出如何做你想做的事：How to update an datagrid with webmethods

从Code Behind填充GridView

1 个答案: