Question

我是这种方法的新手。当我加载记录并将其放入数据表时，我收到了请求超时错误。我使用SP进行查询，当我测试它时它运行不到一秒钟。但是在我的页面中无法做到。

items.vbhtml

<div class="pnl_viewlist">
    <div class="row" style="padding-bottom:10px;">
        <div class="col-lg-12">
            <div class="panel">
                <div class="panel-heading">
                    <h5>Product List</h5>
                </div>
                <div class="panel-body">
                    <div class="table-responsive">
                        <table id="tbl_items" class="table table-responsive">
                            <thead>
                                <tr class="bg-light">
                                    <th class="text-center">Image</th>
                                    <th>Item</th>
                                    <th>Description</th>
                                    <th>Price</th>
                                    <th>Unit</th>
                                </tr>
                            </thead>
                            <tbody></tbody>
                        </table>
                    </div>
                </div>
            </div>
        </div>
    </div>
</div>

项目控制器

Function items_view() As ActionResult
    Return View()
End Function

<HttpPost>
<ValidateAntiForgeryToken>
Function product_catalog(obj As masters.Items) As JsonResult 'function name
    Dim product_catalog_in = ws_masters.items_in_up(obj, Session("company_no"), Session("user_id"), Session("user_group_title")) 'from asmx
    Return Json(product_catalog_in, JsonRequestBehavior.AllowGet)
End Function

<HttpGet>
Function item_code_view_sel() As JsonResult
    Dim item_code As New List(Of masters.items)(ws_masters.item_code_sel_view())
    Return Json(item_code, JsonRequestBehavior.AllowGet)
End Function

<HttpGet>
Function item_list(item_id As Int32) As JsonResult
    Dim items As New List(Of masters.items)(ws_masters.item_view_sel(item_id, Session("company_no")))
    Return Json(items, JsonRequestBehavior.AllowGet)
End Function

<HttpPost>
Public Function upload_item_image(item_id As Int32) As JsonResult
    Dim _url_file_name As String = ""
    Try
        If Request.Files.Count > 0 Then
            For Each uploaded_file As String In Request.Files
                Dim fileContent = Request.Files(uploaded_file)
                If fileContent IsNot Nothing AndAlso fileContent.ContentLength > 0 Then
                    Dim fileName = Path.GetFileName(uploaded_file)
                    _url_file_name = "/Images/users/" + fileName
                    fileContent.SaveAs(Path.Combine(Server.MapPath("~/Images/users"), fileName))
                    ws_masters.update_item_image(_url_file_name, item_id)
                End If
            Next
        Else
            Return Json("No Selected File", JsonRequestBehavior.AllowGet)
        End If
    Catch generatedExceptionName As Exception
        Return Json("Upload failed", JsonRequestBehavior.AllowGet)
    End Try
    Return Json(_url_file_name, JsonRequestBehavior.AllowGet)
End Function

items.js

function load_item_list() {
    $.ajax({
        url: "/master/item_list?item_id=0",
        type: "GET",
        contentType: "application/json;charset=utf-8",
        dataType: "json",
        success: function (result) {
            var vdatatable = $("#tbl_items").DataTable();
            vdatatable.clear();
            vdatatable.draw();
            $.each(result, function (key, item) {
                vdatatable.row.add(["<img src='"+ item.thumb_path + "' class='img-thumbnail img-responsive thumb' style='width:50px;' />", "<a href='#' onClick='item_details(\"" + item.item_id + "\");'>" + item.item_code + "</a>", item.item_desc, item.price, item.uom_code]).draw();
            });
        },
        error: function (errormessage) {
            console.log(errormessage.responseText);
        }
    });
}

请详细解答。这个方法刚刚开始。非常感谢！

VB.Net：如何在加载大量记录时解决请求超时？

0 个答案: