EasyUI Datagrid rows could not be posted to the corresponding action in ASP.NET MVC4 when the rows count more than 125

Question

I met a issue which is the Ajax could not post a more than 125 rows of data to the corresponding action in the ASP.NET MVC4. When the row count is less than 125, everything could be OK. So it's strange here.

[JS Ajax]

$("#btnExport").click(function () {
    var rows = $("#List").datagrid("getRows"); 

    $.ajax({
        url: "/SysException/Export?sysExceptionModels",
        data: JSON.stringify(rows), 
        type: "POST",
        contentType: 'application/json; charset=utf-8',
        success: function (data) {
        if (data.type == 1) {
            $("#aExportExcel")[0].click(); 
            $.messageBox5s('提示', data.message);
            } else {
            $.messageBox5s('提示', data.message);
            }
        }
    });
});

[ASP.NET MVC4]

    static List<SysExceptionModel> _sysExceptionModelModels = null;

    [HttpPost]
    public JsonResult Export(List<SysExceptionModel> sysExceptionModels)
    {
        _sysExceptionModelModels = sysExceptionModels;
        if (_sysExceptionModelModels == null)
        {
            return Json(JsonHandler.CreateMessage(0, "no data，could not export！"), JsonRequestBehavior.AllowGet);
        }
        else
        {
            return Json(JsonHandler.CreateMessage(1, "export sucessfully！"), JsonRequestBehavior.AllowGet);
        }
    }

one row is like below:

0000688A-85F5-4F72-BE86-85BCADED2DE NULL BBBB BBBB BBBB BBBB BBBB 2015-10-22 02:27:38.000

Micha Somers · Accepted Answer · 2015-10-22 07:30:00Z

1

You probably are exceeding the max serialization size. Try increasing the MaxJsonDeserializerMembers value in your web.config. Default value is 1000, which might be a bit too small. 150000 might be a better value:

<appSettings>
    <add key="aspnet:MaxJsonDeserializerMembers" value="150000" />
</appSettings>

answered Oct 22, 2015 at 7:30

Micha Somers

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2 Comments

Kevin Garnett Over a year ago

It works,appreciate.BTW,for the class JavaScriptSerializer,when i use its method named 'Serialize', I also met the exceeding the max serialization size issue.Should I add the extensions like below?<system.web.extensions> <scripting> <webServices> <jsonSerialization maxJsonLength="2147483644"/> </webServices> </scripting> </system.web.extensions>

Micha Somers Over a year ago

A different topic; I think this post answers your last question: stackoverflow.com/questions/5692836/…

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