/// <summary>
/// 引发一个删除选中记录的事件。
/// </summary>
public void DoRemoveRow()
{
if (this.dataGridView1.SelectedRows.Count == 0)
{
return;
}
System.Collections.Generic.List <DataRow> l = new List <DataRow>();
foreach (DataGridViewRow tmp in this.dataGridView1.SelectedRows)
{
l.Add(((DataRowView)tmp.DataBoundItem).Row);
}
if (this._DeleteRowClick != null)
{
foreach (var tmp in l)
{
RemoveRowEventArgs rre = new RemoveRowEventArgs();
rre.dataRow = tmp;
this._DeleteRowClick(this, rre);
}
}
else
{
foreach (var tmp in l)
{
tmp.Delete();
}
}
}
/// <summary>
/// 引发一个刷新数据事件。
/// </summary>
public void DoRefreshData()
{
if (!this.CustomSave && this.HasChanges())
{
switch (MessageBox.Show(this, "数据已经变更，需要保存吗？", "", MessageBoxButtons.YesNoCancel, MessageBoxIcon.Question, MessageBoxDefaultButton.Button1))
{
case DialogResult.Yes:
this.DoSave();
if (this.HasChanges()) //如果执行保存操作后仍然有未保存的数据（例如保存数据失败）则结束此方法。
{
return;
}
break;
case DialogResult.No:
break;
case DialogResult.Cancel:
default:
return;
}
}
if (this._OnRequestNewPage != null)
{
this.ClearData();
//if (this.CurrentPageIndex >= this.PagesCount) //如果请求了新页，则引发此事件，以便通知用户从服务器加载数据。
{
DataTable data = new DataTable();
RequestNewPageEventArgs pice = new RequestNewPageEventArgs(0, this.PageSize, data);
this._OnRequestNewPage(this, pice);
//if (data.Rows.Count > 0)
{//没有数据也要显示表头。
data.TableName = this.CurrentPageIndex.ToString();
data.RowDeleting += delegate(object rdsender, DataRowChangeEventArgs drcea)
{
if (this._RowDeleting != null)
{
RemoveRowEventArgs rre = new RemoveRowEventArgs();
rre.dataRow = drcea.Row;
this._RowDeleting(this, rre);
}
};
if (this.DataSource.Tables.Contains(this.CurrentPageIndex.ToString()))
{
DataTable dtmp = this.DataSource.Tables[this.CurrentPageIndex.ToString()];
this.DataSource.Tables.Remove(dtmp);
dtmp.Dispose();
}
this.DataSource.Tables.Add(data);
//{
// this.bindingSource.DataMember = this.CurrentPageIndex.ToString();
//}
this.CanRequestNewPage = data.Rows.Count >= this.PageSize;
this.CurrentPageIndex = 0;
//this.RebindData();
if (this._RequestFirstPageEvent != null)
{
this._RequestFirstPageEvent(this, new EventArgs());
}
if (this._RequestNewPageSuccess != null)
{
this._RequestNewPageSuccess(this, new EventArgs());
}
}
}
}
else
{
MessageBox.Show(this, "没有处理 OnRequestNewPage 事件，这将导致永远没有可用数据！", "", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
