填写的dataGridView感谢对的BackgroundWorker [英] Fill dataGridView thank's to backGroundWorker

问题描述

我有这样的代码片段：

private void backgroundWorker1_DoWork(object sender, System.ComponentModel.DoWorkEventArgs e)
    {
        remplirDataGrid();
    }

private void frmChercherActesLoad(object sender, EventArgs e)
        {
            backgroundWorker1.RunWorkerAsync();

        }



 private void remplirDataGrid()
        {
            dataGridView1.DataSource = ActeServices.getAllActes(0, 40);
            dataGridView1.Columns[0].Visible = false;
            dataGridView1.Columns[1].HeaderText = "Code acte";
            dataGridView1.Columns[2].HeaderText = "Désignation";
            dataGridView1.Columns[3].HeaderText = "Pris en charge";
            dataGridView1.Columns[4].HeaderText = "Id article";
            dataGridView1.AutoResizeColumns(DataGridViewAutoSizeColumnsMode.AllCells);
        }

和这里的方法 getAllActe ：

public static IEnumerable<Acte> getAllActes(int skipCount, int takeCount)
        {
            var myTableAdapter = new SmartDocDALServices.SmartDocDataSetTableAdapters.actesTableAdapter();
            myTableAdapter.Fill(myDataSet.actes);
            var myResult = from q in myDataSet.actes.AsEnumerable()
                            select new Acte
                            {
                                code = q.code,
                                designation = q.designation,
                                priseEnCharge = q.prise_en_charge,
                                idArticle = q.id_article,
                            };

            if (skipCount != -1)
                myResult.Skip(skipCount);
            if (takeCount != -1)
                myResult.Take(takeCount);
            IEnumerable<Acte> myResultRet = myResult.ToList();
            return myResultRet;

我喜欢做的是，以填补我的的datagridview 使用后台工作，一旦我跑我得到这个错误的应用程序：

What I like to do is to fill my datagridview using the background worker once I run the application I got this error:

跨线程操作无效：控制'dataGridView1一直从比它创建另外一个线程访问的主题。

Inter-thread operation not valid: Control 'dataGridView1 has been the subject of an access from a thread other than the one it was created.

我试试这个

 private void backgroundWorker1_DoWork(object sender, System.ComponentModel.DoWorkEventArgs e)
    {
      IEnumerable<Acte> result = ActeServices.getAllActes(0, 40);
       backgroundWorker1.ReportProgress(0, result);

    }

    void backgroundWorker1_ProgressChanged(object sender, ProgressChangedEventArgs e)
    {

      dataGridView1.DataSource = (IEnumerable<Acte>)e.UserState;
      dataGridView1.Columns[0].Visible = false;
      dataGridView1.Columns[1].HeaderText = "Code acte";
     ***

但一无所获时间？我想，当BGW加载数据foreash数据加载数据网格更新其添加到DGV

but nothing gained in time?. I'd like that the datagrid update when the BGW loads data foreash data load it add it to the DGV

推荐答案

这是因为GUI东西不能从其他线程不是GUI线程修改。为了解决这个问题，你需要使用Dispatcher调用GUI线程上的变化。

It is because GUI stuff cannot be modified from other threads than the GUI thread. To fix this, you need to invoke the changes on the GUI thread by using the Dispatcher.

在DataGrid中应建立事前，所以你在你的异步操作做的是。填充数据

The DataGrid should be setup beforehand, so all you do in your async operation is fill the data.

var data = ActeServices.getAllActes(0, 40);

Dispatcher.BeginInvoke( new Action( () => { dataGridView1.DataSource = data; }))

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