怎样将LIST中的数据绑定到GridView，并实现增删改查

Posted 2023-05-06

我的一个GridView操作文件,数据源是实体LIST,删改查功能都有了，你参考下
using System;
using System.Collections;
using System.Collections.Generic;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.htmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;
using lwf_MVC.CTRL;
using lwf_MVC.lwf_Normal;
using lwf_MVC.MODEL;

public partial class admin_news_edit : System.Web.UI.Page

public string icls_name = "cls_f_news";

//不同级数系列区别在于iWhere
public string iWhere = " 1 = 1 and ENG = " + WEB.GQ("ENG", "0") + " and TID1 = " + WEB.GQ("SSS", "1") + " and 1 = 1";

public int getRecordCount()


cls_f_news if_news = (cls_f_news)CTRL.CreateModel(icls_name);
if_news.title = soKey.Text;
if_news.contents = soKey.Text;
if_news.WHERE = iWhere;
int i_recordcount = CTRL.getCount(if_news, "order by orderid,id desc");
return i_recordcount;



protected void Page_Load(object sender, EventArgs e)

if (WEB.getSession("userName") == null || WEB.getSession("userName") == "") JS.RD(System.Web.HttpUtility.UrlDecode("%e7%99%bb%e9%99%86%e8%b6%85%e6%97%b6%2c%e8%af%b7%e9%87%8d%e6%96%b0%e7%99%bb").Trim(), "../login.aspx");
if (!IsPostBack)

AspNetPagerBin(1);
GridViewBin();



protected void AspNetPagerBin(int curr)


int i_recordcount = getRecordCount();
AspNetPager1.RecordCount = i_recordcount;
AspNetPager1.CurrentPageIndex = curr;



protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e)

GridView1.EditIndex = e.NewEditIndex;
GridViewBin();

protected void GridView1_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e)

GridView1.EditIndex = -1;
GridViewBin();

protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)

int i_id = int.Parse(GridView1.DataKeys[e.RowIndex].Value.ToString());

cls_f_news baseTableObj = (cls_f_news)CTRL.CreateModel(icls_name, i_id);

baseTableObj.title = ((TextBox)GridView1.Rows[e.RowIndex].Cells[2].Controls[0]).Text.ToString();
baseTableObj.newfrom = ((TextBox)GridView1.Rows[e.RowIndex].Cells[3].Controls[0]).Text.ToString();
baseTableObj.addTime = DateTime.Parse(((TextBox)GridView1.Rows[e.RowIndex].Cells[4].Controls[0]).Text.ToString());

baseTableObj.orderid = int.Parse(((TextBox)GridView1.Rows[e.RowIndex].FindControl("tb_orderid_b")).Text.ToString());

if (CTRL.Update(baseTableObj))

JS.alert(System.Web.HttpUtility.UrlDecode("%e4%bf%ae%e6%94%b9%e6%88%90%e5%8a%9f").Trim());

else

JS.alert(System.Web.HttpUtility.UrlDecode("%e7%bd%91%e7%bb%9c%e8%b6%85%e6%97%b6%ef%bc%8c%e8%af%b7%e9%87%8d%e6%96%b0%e5%86%8d%e8%af%95").Trim());


//====================================

GridView1.EditIndex = -1;
GridViewBin();



protected void GridView1_RowDeleting(object sender, GridViewDeleteEventArgs e)

int i_id = int.Parse(GridView1.DataKeys[e.RowIndex].Value.ToString());

cls_f_news baseTableObj = (cls_f_news)CTRL.CreateModel(icls_name, i_id);
if (CTRL.Delete(baseTableObj))

JS.alert(System.Web.HttpUtility.UrlDecode("%e8%ae%b0%e5%bd%95%e5%88%a0%e9%99%a4%e6%88%90%e5%8a%9f").Trim());

else

JS.alert(System.Web.HttpUtility.UrlDecode("%e7%bd%91%e7%bb%9c%e8%b6%85%e6%97%b6%ef%bc%8c%e8%af%b7%e9%87%8d%e6%96%b0%e5%86%8d%e8%af%95").Trim());

//====================================

GridView1.EditIndex = -1;
GridViewBin();


protected void AspNetPager1_PageChanged(object sender, EventArgs e)

GridView1.EditIndex = -1;
GridView1.PageIndex = AspNetPager1.CurrentPageIndex;
GridViewBin();


protected void CheckBox_all_CheckedChanged(object sender, EventArgs e)

CheckBox_opp.Checked = false;

for (int i_i = 0; i_i <= GridView1.Rows.Count - 1; i_i++)

CheckBox ckb = (CheckBox)GridView1.Rows[i_i].FindControl("cb_selBoxs");
if (CheckBox_all.Checked)

ckb.Checked = true;

else

ckb.Checked = false;




protected void CheckBox_opp_CheckedChanged(object sender, EventArgs e)

CheckBox_all.Checked = false;

for (int i_i = 0; i_i <= GridView1.Rows.Count - 1; i_i++)

CheckBox ckb = (CheckBox)GridView1.Rows[i_i].FindControl("cb_selBoxs");
if (ckb.Checked)

ckb.Checked = false;

else

ckb.Checked = true;





protected void lb_delete_Click(object sender, EventArgs e)

for (int i_i = 0; i_i <= GridView1.Rows.Count - 1; i_i++)

CheckBox ckb = (CheckBox)GridView1.Rows[i_i].FindControl("cb_selBoxs");
if (ckb.Checked)


int i_id = int.Parse(GridView1.DataKeys[i_i].Value.ToString());
cls_f_news baseTableObj = (cls_f_news)CTRL.CreateModel(icls_name, i_id);
CTRL.Delete(baseTableObj);




int i_Pcount = getRecordCount();

if (AspNetPager1.CurrentPageIndex > i_Pcount)

AspNetPagerBin(i_Pcount);

else

AspNetPagerBin(AspNetPager1.CurrentPageIndex);

GridViewBin();

protected void lb_order_Click(object sender, EventArgs e)

for (int i_i = 0; i_i <= GridView1.Rows.Count - 1; i_i++)

TextBox tb = (TextBox)GridView1.Rows[i_i].FindControl("tb_orderid_a");

int i_id = int.Parse(GridView1.DataKeys[i_i].Value.ToString());
cls_f_news baseTableObj = (cls_f_news)CTRL.CreateModel(icls_name, i_id);
baseTableObj.orderid = int.Parse(tb.Text.ToString());
CTRL.Update(baseTableObj);


GridViewBin();

protected void bt_search_Click(object sender, EventArgs e)

AspNetPagerBin(1);
GridViewBin();


protected void GridView1_RowCommand(object sender, GridViewCommandEventArgs e)

int rowNum;
int id_i;



protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)

if (e.Row.RowType == DataControlRowType.DataRow)





protected void GridView1_Sorting(object sender, GridViewSortEventArgs e)

string sortExpression = e.SortExpression;

ViewState["sortExpression"] = sortExpression;

if (ViewState["ASC"].ToString() == "0")

ViewState["ASC"] = "1";

else

ViewState["ASC"] = "0";


AspNetPagerBin(1);
GridViewBin();


protected void GridViewBin()


CheckBox_all.Checked = false;

cls_f_news if_news = (cls_f_news)CTRL.CreateModel(icls_name);
if_news.title = soKey.Text;
if_news.contents = soKey.Text;
if_news.WHERE = iWhere;

int RecordCount;
int curP = Convert.ToInt32(AspNetPager1.CurrentPageIndex);
List<cls_f_news> iList_f_news = CTRL.getPageList(if_news, "order by orderid,id desc", AspNetPager1.PageSize, curP, out RecordCount).ConvertAll<cls_f_news>(delegate(lwf_MVC.MODEL.baseTable s) return (cls_f_news)s; );

if (ViewState["ASC"] == null) ViewState["ASC"] = "-1";
if (ViewState["sortExpression"] == null) ViewState["sortExpression"] = "orderid";
if (ViewState["ASC"].ToString() == "-1")

iList_f_news.Sort(delegate(cls_f_news a, cls_f_news b) return (new CaseInsensitiveComparer()).Compare(a.GetType().GetProperty(ViewState["sortExpression"].ToString()).GetValue(a, null), b.GetType().GetProperty(ViewState["sortExpression"].ToString()).GetValue(b, null)); );

else

if (ViewState["ASC"].ToString() == "1")

iList_f_news.Sort(delegate(cls_f_news a, cls_f_news b) return (new CaseInsensitiveComparer()).Compare(a.GetType().GetProperty(ViewState["sortExpression"].ToString()).GetValue(a, null), b.GetType().GetProperty(ViewState["sortExpression"].ToString()).GetValue(b, null)); );

else

iList_f_news.Sort(delegate(cls_f_news a, cls_f_news b) return (new CaseInsensitiveComparer()).Compare(b.GetType().GetProperty(ViewState["sortExpression"].ToString()).GetValue(b, null), a.GetType().GetProperty(ViewState["sortExpression"].ToString()).GetValue(a, null)); );





GridView1.DataSource = iList_f_news;
GridView1.DataKeyNames = new string[] "id" ;
GridView1.DataBind();

参考技术A 给你个很笨的办法，在页面调用后台的方法，获取数据，显示 参考技术B 装箱,装到datatable中去

关于怎样获取DevExpress GridView过滤后或排序后的数据集问题(转)

GridView用自带的过滤功能过滤数据后，想要获取过滤后的数据集，有两种方式：

一、笨办法就是循环遍历GridView，根据gridView.GetRow()或者gridView.GetDataRow()(该方法返回DataRow类型，使用于数据源是DataTable)去获取指定handle对应的数据对象。

1、若GridControl绑定的数据源是List类型，可以调用以下方法

/// <summary>
/// 获取GridView过滤或排序后的数据集
/// </summary>
/// <typeparam name="T">泛型对象</typeparam>
/// <param name="view">GridView</param>
/// <returns></returns>
public IEnumerable<T> GetGridViewFilteredAndSortedData<T>(DevExpress.XtraGrid.Views.Grid.GridView view) where T : class
{
var list = new List<T>();
for (int i = 0; i < view.RowCount; i++)
{
if (view.IsGroupRow(i))
continue;
var entity = view.GetRow(i) as T;
if (entity == null)
continue;
list.Add(entity);
}
return list;
}

2、若GridControl绑定的数据源是DataTable类型，可以调用以下方法：
<pre name="code" class="csharp"> /// <summary>
/// 获取GridView过滤或排序后的数据集
/// </summary>
/// <param name="view">GridView</param>
/// <returns></returns>
public DataTable GetGridViewFilteredAndSortedDataToDataTable(DevExpress.XtraGrid.Views.Grid.GridView view)
{
DataTable _dt = view.GridControl.DataSource as DataTable;
if (_dt == null)
return null;
DataTable dt = _dt.Clone();
for (int i = 0; i < view.RowCount; i++)
{
if (view.IsGroupRow(i))
continue;
var dr = view.GetDataRow(i);
if (dr == null)
continue;
dt.Rows.Add(dr.ItemArray);
}
return dt;
}

第二种方法：估计大伙很难找到，DevExpress 的GridView竟然提供了相应的方法，但是奇怪的是编译器竟然没有显示，就是在GridView的基类BaseView中提供了DataController这个对象，查看了这个属性后发现竟然真的被屏蔽了，EditorBrowsable竟然是Never状态（我也表示一脸懵逼）

 当然，屏蔽了，不代表他没有这个属性，那就一脸懵逼的使用吧，DataController提供一个获取过滤后和排序后的数据集的方法：GetAllFilteredAndSortedRows()

为了不每次都懵逼的去这样直接调用，最好还是写一个公用方法去调用吧

<pre name="code" class="csharp"> /// <summary>
/// 获取GridView过滤或排序后的数据集
/// </summary>
/// <param name="view"></param>
/// <returns></returns>
public System.Collections.IList GetGridViewFilteredAndSortedData(DevExpress.XtraGrid.Views.Grid.GridView view)
{
return view.DataController.GetAllFilteredAndSortedRows();
}

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作者：涛神-Dev
来源：CSDN
原文：https://blog.csdn.net/u012097590/article/details/52777437
版权声明：本文为博主原创文章，转载请附上博文链接！