Question

我的usercontrol中有一个DataGridView，我想在进行更改时刷新它。例如，当我单击其他usercontrol中的save按钮时，应调用带有DataGridView的usercontrol中的refresh函数。我已经搜索了这个问题的解决方案，但没有一个解决了我的问题（我尝试了ResetBindings，将DataSource设置为null并再次设置DataSource等）。要从另一个usercontrol调用usercontrol，我使用实例。

   public partial class incidentTypeSearchControl : UserControl
{
    public static incidentTypeSearchControl Instance { get; set; }
    REINVENT_QualityDataSet reinventQualityDataset = new REINVENT_QualityDataSet();
    SqlCommand cmd = new SqlCommand();

    BindingSource source = new BindingSource();
    REINVENT_QualityDataSetTableAdapters.IncIncidentTypeTableAdapter incidentTypeAdapter =
        new REINVENT_QualityDataSetTableAdapters.IncIncidentTypeTableAdapter();

    public incidentTypeSearchControl()
    {
        InitializeComponent();
        Instance = this;
        this.dataGridView1.CellDoubleClick += new System.Windows.Forms.DataGridViewCellEventHandler(this.dataGridView1_CellDoubleClick);
    }

    private void incidentTypeSearchControl_Load(object sender, EventArgs e)
    {                   
        incidentTypeAdapter.Fill(reinventQualityDataset.IncIncidentType);

        source.DataSource = reinventQualityDataset.IncIncidentType;

        dataGridView1.AutoGenerateColumns = true;           
        //dataGridView1.DataSource = reinventQualityDataset.IncIncidentType;
        dataGridView1.DataSource = source;
        dataGridView1.Columns[0].HeaderText = "Id";
        dataGridView1.Columns[1].HeaderText = "Incidenttype";
        dataGridView1.Columns[2].HeaderText = "Categorie";
        dataGridView1.Columns[3].HeaderText = "Tellen in statistiek";
        dataGridView1.Columns[4].HeaderText = "Punten";            
        dataGridView1.Columns[5].HeaderText = "Faalkosten";
        dataGridView1.Columns[6].HeaderText = "Kostendrager";

        for (int i = 0; i < 6; i++)
        {
            dataGridView1.Columns[i].AutoSizeMode = DataGridViewAutoSizeColumnMode.AllCells;
        }          
        dataGridView1.Columns[6].AutoSizeMode = DataGridViewAutoSizeColumnMode.Fill;

        dataGridView1.BackgroundColor = System.Drawing.SystemColors.Control;

    }
    //added/      
    public DataGridView myDataGrid
    {
        get { return dataGridView1; }
        set { dataGridView1 = value; }
    }

    public void updateDataGridView()
    {
        dataGridView1.DataSource = null;
        dataGridView1.DataSource = source;
        source.ResetBindings(true);
    }

在其他用户控件中，我可以像这样访问datagridview：

    incidentTypeSearchControl.Instance.myDataGrid // access datagridview

调用updateGridView（）方法将网格标题文本设置回默认值（这不是意图），并且datagridview中的值不会更新。如何制作一个刷新/更新我的datagridview并从我的其他用户控件调用此方法的方法？

更新：

通过再次填充数据集解决了问题

Answer 1

试

dataGridView1.DataSource = typeof(IncIncidentTypeDataTable); // or whatever type is your source
dataGridView1.DataSource = source;

更改后，从其他用户控件刷新userGtrol中的DataGridView

1 个答案: