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Datagridview未更新数据源

datagridview winforms c#

0

Srusti Thakkar · 技术社区 · 8 年前

我正在使用Windows窗体应用程序。我在表单上创建了列表,在Add按钮上创建了新窗口。添加新记录时,数据源正在更新,但gridview不显示上次添加的记录。为什么会这样?

public MainForm()
    {
        InitializeComponent();
        BindCompanyData();
    }

 public void BindCompanyData()
    {
        List<CompanyListModel> companyListModel = new List<CompanyListModel>();
        companyListModel =  _obiClient.GetCompanies();
        companyDataGrid.DataSource = null;
        companyDataGrid.DataSource = companyListModel;
        companyDataGrid.Refresh();
        companyDataGrid.CellClick += new DataGridViewCellEventHandler(DatGridCell_Click);
    }

private void btn_addCompany_Click(object sender, EventArgs e)
    {
        CompanyAddEdit companyAddEdit = new CompanyAddEdit();
        companyAddEdit.ShowForm();
    }

按“添加”按钮打开新窗体。最后,我打电话给 BindCompanyData() 方法。

 private void btn_save_Click(object sender, EventArgs e)
    {
        string selectedItem = cmbbx_companyType.SelectedItem.ToString();            
        WriteXML(selectedItem);
        this.Close();
        MainForm mainForm = new MainForm();
        mainForm.BindCompanyData();
    }

少了什么?

1 回复 | 直到 8 年前

1

Aleksa Ristic 8 年前

BindCompanyData(); 在新创建的带有代码的窗体上:

MainForm mainForm = new MainForm();
mainForm.BindCompanyData();

你应该在里面做 CompanyAddEdit 构造函数请求 MainForm form 参数并传递您在按钮中使用的当前窗体。所以你的代码是这样的:

//Inside CompanyAddEdit form
class CompanyAddEdit : Form
{
    MainForm passedForm;

    public CompanyAddEdit(MainForm form)
    {
        this.passedForm = form;
    }
    //other code
    private void btn_save_Click(object sender, EventArgs e)
    {
        string selectedItem = cmbbx_companyType.SelectedItem.ToString();            
        WriteXML(selectedItem);
        this.Close();

        passedForm.BindCompanyData();
   }
}



//Inside main form
private void btn_addCompany_Click(object sender, EventArgs e)
{
    CompanyAddEdit companyAddEdit = new CompanyAddEdit(this);
    companyAddEdit.ShowForm();
}