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asp.net - 将数据从 jqGrid 传递到 webmethod

转载 作者:行者123 更新时间:2023-12-02 10:14:10 25 4
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这是我的 jqGrid 调用 web 方法

$(document).ready(function () {
jQuery("#prodgrid").jqGrid({
url: 'product_brow.aspx/ProdGrid',
postData: {
ddlproductstatus: function() {
return $("#<%=ddlProductStatus.ClientID%>").val();
},
ddlproducttype: function() {
return $("#<%=ddlProductType.ClientID%>").val();
},
txtkeywordsearch: function() {
return $("#<%=txtKeywordSearch.ClientID%>").val();
},
hdnMerchantId: function() {
return $("#<%=hdnmerchantId.ClientID%>").val();
}
},
mtype: 'POST',
serializeEditData: function (postData) {
return JSON.stringify(postData);
} ,
colNames: ['Code', 'Title', 'Price', 'Product Group', 'Edit', 'Status'],
colModel: [
{ name: 'Code', index: 'Code', width: 15, align: 'center' },
{ name: 'Title', index: 'Title', width: 40, align: 'center' },
{ name: 'Price', index: 'Price', width: 55 },
{ name: 'Product Group', index: 'Product Group', width: 55 },
{ name: 'Edit', index: 'Edit', width: 40 },
{ name: 'Status', index: 'Status', width: 40}],
pager: '#prod_pager',
rowList: [10, 20, 30],
sortname: 'Code',
sortorder: 'desc',
rowNum: 10,
loadtext: "Loading....",
shrinkToFit: true,
multiselect: true,
emptyrecords: "No records to view",
width: x - 40,
height: 230,
rownumbers: true,
subGrid: true,
caption: 'Products'
// editurl: 'Departments.aspx'
});
jQuery("#prodgrid").jqGrid('navGrid', '#prod_pager',
{ edit: false, add: false, del: true, excel: true, search: false });
});

正如你所看到的,我正在尝试使用这样的参数将数据从这里传递到 Web 方法

[WebMethod]
public static string ProdDetails(string ddlproductstatus,
string ddlproducttype,
string txtkeywordsearch,
string hdnMerchantId)
{
StringBuilder sbReturnJson = new StringBuilder();
string strReturnJson = string.Empty;
StringBuilder sbCell = new StringBuilder();

try
{
string sort = HttpContext.Current.Request.Form["sidx"].ToString();
string strSortDerection = HttpContext.Current.Request.Form["sord"].ToString();
int iPage = Convert.ToInt32(HttpContext.Current.Request.Form["page"]);//get the requested page
string strLimit = HttpContext.Current.Request.Form["rows"].ToString(); // get how many rows we want to have into the grid
string strStart = Convert.ToString(int.Parse(strLimit) * (iPage - 1));
string strEnd = Convert.ToString(int.Parse(strStart) + int.Parse(strLimit));

string pageNo = string.Empty;
ProductDal oProductDal = new ProductDal();

// bind data to gridview

System.Data.DataTable oDataTable;

if (txtkeywordsearch.Trim().Length == 0)
{
oDataTable = oProductDal.GetAllProductDtToDisplayTest(Convert.ToInt32(hdnMerchantId), ddlproducttype,
ddlproductstatus, iPage, Convert.ToInt32(strLimit));
}
else
{
oDataTable = oProductDal.GetAllProductDtToDisplayBySearchStringTest(Convert.ToInt32(hdnMerchantId), ddlproducttype,
ddlproductstatus, txtkeywordsearch.Trim(), iPage, Convert.ToInt32(strLimit));
}

// keep values in session to use in product detail page to retrieve records.
//Session["ProductType"] = ddlproducttype;
// Session["ProductStatus"] = ddlproductstatus;

if (txtkeywordsearch.Trim().Length != 0)
{
// Session["SearchKeyword"] = txtkeywordsearch;
}


// hlnkExportToExcel.Visible = false;

// calculate the total number of records.
int totalRows = 0;

if (txtkeywordsearch.Trim().Length == 0)
{
totalRows = oProductDal.CountAllProductDtToDisplay(Convert.ToInt32(hdnMerchantId), ddlproducttype,
ddlproductstatus);
}

else
{
totalRows = oProductDal.CountAllProductDtToDisplayBySearchString(Convert.ToInt32(hdnMerchantId), ddlproducttype,
ddlproductstatus, txtkeywordsearch.Trim());
}

//if (!IsPostBack)
//{
// gvProductBrow.PageIndex = _currentPageNumber;
//}


var count = oDataTable.Rows.Count;

sbReturnJson.Append("{\"page\":\"" + iPage + "\",\"records\":\"" + count + "\",\"rows\":[");
foreach (DataRow row in oDataTable.Rows)
{
// int depid = Convert.ToInt32(row[1].ToString());
// var Editbutton = "<img Class='GridEdit' onclick='showjQueryDialog(" + depid + ");' src='Images/edit.jpeg'></img>";
//<a href='#' Class='GridEdit' onclick='showjQueryDialog(" + depid + ");'>Edit</a>
string code = (row[1].ToString());
string title = (row[4].ToString());
string price = (row[7].ToString());
string product_group = (row[5].ToString());
string edit = (row[0].ToString());
string status = (row[2].ToString());

sbCell.Append("{\"cell\":[\"" + code + "\",\"" + title + "\",\"" + price + "\",\"" + product_group + "\",\"" + edit + "\",\"" + status + "\"]}");
sbCell.Append(",");
}

// lblNoOfRows.Text = totalRows + " record(s) found";

sbReturnJson.Append(sbCell.ToString().TrimEnd(','));
double dCount = Math.Ceiling(Convert.ToDouble(count / int.Parse(strLimit)));
int iCount = int.Parse(dCount.ToString()) + 1;
sbReturnJson.Append("],\"total\":\"" + iCount + "\"}");

//lblTopPageNo.Text = (gvProductBrow.PageIndex + 1) + "/" + CalculateTotalPages(totalRows);
//lblBottomPageNo.Text = (gvProductBrow.PageIndex + 1) + "/" + CalculateTotalPages(totalRows);
//ViewState["NoOfPages"] = CalculateTotalPages(totalRows);

}
catch (Exception ex)
{
ExceptionLogger.LogException(ex);
//lblErrorMessage.Text += Resources.Resource.Product_errMsgLoadProduct;
return "Error";
}
return sbReturnJson.ToString();
}

我的 web 方法需要 4 个参数,我试图使用 postData 传递这些参数,但由于我是新手,我不知道如何从 jqGrid 将数据发布到该 web 方法。需要帮助,我被这个问题困扰了大约 5 个小时

您还可以帮忙发送页面、sidx、从 jqgrid 到 web 方法的排序

最佳答案

我建议您使用 ASMX 或 WCF Web 服务。在这种情况下,许多事情(例如 JSON 序列化和反序列化)都会自动为您完成。您应该只从 Web 方法返回一个对象。

总的来说,WCF RESTfull 服务与 ASMX Web 服务相比具有优势,但如果您是初学者,您可以更轻松地将 ASMX Web 服务添加到现有项目中,这样 web.config 的所有更改都会为您创建 Visual Studio。

要将 ASMX Web 服务添加到现有 ASP.NET 项目,您应该执行以下步骤。您在解决方案资源管理器(通常位于 Visual Studio 的右侧)中选择当前项目,然后键入 Ctrl+Shift+A (或单击鼠标右键并选择“添加”和“新项目...”)您应该选择左侧的“Web”模板,然后选择“Web 服务”。您可以将底部的文件名从默认的 WebService1.asmx 更改为您想要的任何名称。例如ProdData.asmx。在 ProdData.asmx.cs 文件中,您应该取消注释带有 [ScriptService] 属性的行。您还可以在文件开头插入 using System.Web.Script.Services;。现在您可以将“Hello world”Web 方法的代码更改为您需要的内容。例如

using System.Collections.Generic;
using System.Web.Services;
using System.Web.Script.Services;

namespace TestWebApplicationWithjqGrid
{
public class GridRow {
public string id { get; set; }
public List<string> cell { get; set; }
}
public class GridData {
public int page { get; set; }
public int total { get; set; }
public int records { get; set; }
public List<GridRow> rows { get; set; }
}
[WebService (Namespace = "http://tempuri.org/")]
[WebServiceBinding (ConformsTo = WsiProfiles.BasicProfile1_1)]
[System.ComponentModel.ToolboxItem (false)]
[ScriptService]
public class ProdData: WebService
{
[WebMethod]
public GridData ProdDetails(string sidx, string sord, int page, int rows,
string ddlproductstatus, string ddlproducttype, string txtkeywordsearch, int hdnMerchantId) {
return new GridData {page = 1, total = 1, records = 2, rows = new List<GridRow> {
new GridRow {id = "i1", cell = new List<string> {"Code1", "Title1", "Price1", "Group1", "Edit1", "Status1"}},
new GridRow {id = "i2", cell = new List<string> {"Code2", "Title2", "Price2", "Group2", "Edit2", "Status2"}}
}};
}
}
}

您当然应该对 ProdDetails Web 方法进行更复杂的实现。 The answer给你例子。另请参见this answer获取更多带有代码示例的链接。

要从 JavaScript 调用 Web 方法,您应该稍微修改一下 jqGrid。您应该包含以下附加参数

datatype: 'json',
ajaxGridOptions: { contentType: "application/json"},
serializeGridData: function (postData) {
var propertyName, propertyValue, dataToSend = {};
for (propertyName in postData) {
if (postData.hasOwnProperty(propertyName)) {
propertyValue = postData[propertyName];
if ($.isFunction(propertyValue)) {
dataToSend[propertyName] = propertyValue();
} else {
dataToSend[propertyName] = propertyValue
}
}
}
return JSON.stringify(dataToSend);
},
jsonReader: {
root: "d.rows",
page: "d.page",
total: "d.total",
records: "d.records"
}

我从 my previous answer 获得的 serializeGridData 代码。更复杂的是

serializeGridData: function (postData) { return JSON.stringify(postData); }

在大多数情况下使用,因为您使用 postData 内部的函数。

Here您可以下载VS2010 .NET 3.5工作项目以及相应的代码。

关于asp.net - 将数据从 jqGrid 传递到 webmethod,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/6292510/

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