C#多线程异步处理数据通用界面窗体(frmThreadOperating)-开发框架文库

C#多线程异步处理数据通用界面窗体(frmThreadOperating)

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C#多线程异步处理数据通用界面窗体(frmThreadOperating)

frmThreadOperating界面简介

设计了一个异步多线程处理数据的通用界面（C#异步操作等待窗体）frmThreadOperating，用于查询大数据、批量处理大数据时提高用户体验。

比如要实现大批量数据跨业务系统推送，如下图所示：

参考文档：C#列复合勾选组件ColumnHeaderCheckBox

http://www.csframework.com/archive/1/arc-1-20160721-2258.htm

点击【查询】按钮开始分析数据并返回查询结果：

点击【批量共享】或【反共享】按钮开始批量共享数据：

【查询】按钮事件：

C# Code:

private void btnQuery_Click(object sender, EventArgs e)
{
if (txtOrgCode.Text + txt_DocType.Text + txtDocNo.Text + txt_D1.Text + txt_D2.Text == "")
{
Msg.Warning("数据量很大，必须指定查询条件！");
return;
}

QueryFMSData4Batch parameters = new QueryFMSData4Batch
{
orgCode = txtOrgCode.EditValue.ToStringEx(),
docTypes = ConvertEx.ToString(txt_DocType.EditValue),
docNo = txtDocNo.Text,
dateTime1 = ConvertEx.ToSqlDateTime(txt_D1.DateTime),
dateTime2 = ConvertEx.ToSqlDateTime(txt_D2.DateTime),
operate = "全部"
};

SetBatchButton(false);
CCursor.ShowWaitCursor();
frmThreadOperating.ShowMe(this, this.ToQuery, parameters, this.ToQueryAborting, this.ToQueryFinishied, "查询数据");

}

//来源:C/S框架网 | www.csframework.com | QQ:23404761

frmThreadOperation窗体的ShowMe方法提供6个参数，其中有3个参数是事件委托：

C# Code:

/// <summary>
/// 显示线程操作窗体
/// </summary>
/// <param name="owner">父级窗体，打开线程操作窗体</param>
/// <param name="doSomething">执行操作</param>
/// <param name="parameters">传入参数</param>
/// <param name="aborting">取消线程通知</param>
/// <param name="finished">线程完成后回调事件</param>
/// <param name="windowCaption">设置窗体标题</param>
public static void ShowMe(
Form owner,
MyThreadExecuting doSomething, object parameters,
MyThreadAborting aborting,
MyThreadFinished finished,
string windowCaption = "")
{
if (_Instance == null)
{
_Owner = owner;
_OnOperating = doSomething;
_Params = parameters;
_OnFinished = finished;
_OnAborting = aborting;
_Instance = new frmThreadOperating();
_Instance.Text = windowCaption.IsNullOrEmpty() ? "异步操作等待窗体" : windowCaption;
_Instance.ShowDialog(owner);
}
else
{
Msg.Warning("异步任务正在运行中，请完成此任务后再操作！");
}
}

//来源:C/S框架网 | www.csframework.com | QQ:23404761

3个事件委托类型：

C# Code:

#region 自定义委托类型

public delegate object MyThreadExecuting(object param);//线程主方法
public delegate void MyThreadFinished(object data);//主方法调用结束后，通知完成事件
public delegate bool MyThreadAborting();//线程终止事件，必须返回True;

#endregion

//来源:C/S框架网 | www.csframework.com | QQ:23404761

【查询】按钮事件调用ShowMe方法，对应的3个委托事件：

1.查询数据

C# Code:

private object ToQuery(object param)
{
//查询数据，返回DataTable
return FMSHelper.QueryAllDocs(param as QueryFMSData4Batch);
}

//来源:C/S框架网 | www.csframework.com | QQ:23404761

2.查询完成

C# Code:

private void ToQueryFinishied(object data)
{
//查询数据完成，返回DataTable对象，绑定表格数据源
if (data != null)
{
gcSummary.DataSource = data;

_ColumnHeaderCheckBox.Detach();
_ColumnHeaderCheckBox = new ColumnHeaderCheckBox(gvSummary, colFlagCheck);
}

SetBatchButton(true);
CCursor.ShowDefaultCursor();
}

//来源:C/S框架网 | www.csframework.com | QQ:23404761

3.查询时取消线程

C# Code:

private bool ToQueryAborting()
{
//允许查询的时候中断线程
return true;
}

//来源:C/S框架网 | www.csframework.com | QQ:23404761

frmThreadOperation窗体部分代码：

C# Code:

/// <summary>
/// 异步线程处理通用界面(异步操作等待窗体)
/// </summary>
public partial class frmThreadOperating : frmBase
{

#region 自定义委托类型

public delegate object MyThreadExecuting(object param);
public delegate void MyThreadFinished(object data);
public delegate bool MyThreadAborting();//线程终止事件，必须返回True;
public delegate void MyThreadClose();

#endregion

private static frmThreadOperating _Instance = null;

private static Thread _T;
private static Form _Owner;
private static Object _Params;//MyThreadExecuting事件的参数

private static MyThreadExecuting _OnOperating;
private static MyThreadFinished _OnFinished;
private static MyThreadAborting _OnAborting;

//计时器读秒
private int _Secondes = 0;

private frmThreadOperating()
{
InitializeComponent();
}

private void frmThreadOperating_Load(object sender, EventArgs e)
{
//开始计时
_Secondes = 1;
timer1.Start();

//启动线程
_T = new Thread(OnThreadStart);
_T.Start();
}

/// <summary>
/// 显示线程操作窗体
/// </summary>
/// <param name="owner">父级窗体，打开线程操作窗体</param>
/// <param name="doSomething">执行操作</param>
/// <param name="parameters">传入参数</param>
/// <param name="finished">线程完成后回调事件</param>
/// <param name="windowCaption">设置窗体标题</param>
public static void ShowMe(
Form owner,
MyThreadExecuting doSomething, object parameters,
MyThreadAborting aborting,
MyThreadFinished finished,
string windowCaption = "")
{
if (_Instance == null)
{
_Owner = owner;
_OnOperating = doSomething;
_Params = parameters;
_OnFinished = finished;
_OnAborting = aborting;
_Instance = new frmThreadOperating();
_Instance.Text = windowCaption.IsNullOrEmpty() ? "异步操作等待窗体" : windowCaption;
_Instance.ShowDialog(owner);
}
else
{
Msg.Warning("异步任务正在运行中，请完成此任务后再操作！");
}
}

//
//省略代码....
//

}

//来源:C/S框架网 | www.csframework.com | QQ:23404761

本实例源码仅CSFramework.V5旗舰版集成，若其他版本用户需要，请联系作者。

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原文链接：https://www.cscode.net/archive/newdoc/cs-210903193618490-23.html

NewDoc C/S框架网 2020-05-11 15:59 2020-05-11 15:59