internal static object GetKeyValue(object gridViewRow, IMvcHelper helper)
{
string keyFldName = string.Empty;
object data = helper.GetDataSource();
var tbl = data as DataTable;
if (tbl != null)
{
if (tbl.PrimaryKey != null)
{
if (tbl.PrimaryKey.Length > 0)
keyFldName = tbl.PrimaryKey[0].ColumnName;
}
if (string.IsNullOrWhiteSpace(keyFldName))
keyFldName = tbl.Columns[0].ColumnName;
var row = gridViewRow as System.Data.DataRow;
if (row == null)
row = (gridViewRow as System.Data.DataRowView).Row;
var keyValue = row[keyFldName];
return new { Name = keyFldName, Value = keyValue };
}
return gridViewRow;
}
public ControllerAction(IMvcHelper helper, object gridViewRow)
{
this.helper = helper;
this.gridViewRow = gridViewRow;
}
public MvcDataGridView(DataGridView dataGridView, IMvcHelper imvc)
{
this.iMvc = imvc;
if (this.iMvc.IsRegistered) return;
#region 执行控制器的子操作
Action<int, int> actExecPost = (iFlag, iCurrentRowIndex) =>
{
if (iCurrentRowIndex > -1)
this.CurrentRow = dataGridView.Rows[iCurrentRowIndex];
else
this.CurrentRow = null;
object oPrmValue = null;
string currActionName = string.Empty;
if (iFlag == 0)
{
currActionName = this.newActionName;
oPrmValue = this.funcNewValues == null ? null : this.funcNewValues(this);
}
else if (iFlag == 1)
{
currActionName = this.editActionName;
oPrmValue = this.funcEditValues == null ? null : this.funcEditValues(this);
}
else if (iFlag == 2)
{
currActionName = this.deleteActionName;
oPrmValue = this.funcDeleteValues == null ? null : this.funcDeleteValues(this);
}
if (string.IsNullOrWhiteSpace(currActionName)) return;
if (oPrmValue == null && (this.funcNewValues == null || this.funcEditValues == null || this.funcDeleteValues == null))
{
if (this.CurrentRow != null)
{
this.iMvc.GridFirstColumnCellValue = this.GetKeyValue();
}
this.iMvc.Action(currActionName);
}
else
this.iMvc.Action(currActionName, oPrmValue);
};
#endregion
#region DataGridView事件与属性
dataGridView.VirtualMode = true;
dataGridView.CellEnter += (s, e) =>
{
bool isSubmited = false;
//当进入单元格时，判断是否添加或编辑，则引发对应子操作
if (bNew && currChangeRowIndex != e.RowIndex)
{
actExecPost(0, currChangeRowIndex); //System.Diagnostics.Debug.WriteLine("new row update:" + currChangeRowIndex);
isSubmited = true;
}
else if (currChangeRowIndex != e.RowIndex && bChged)
{
actExecPost(1, currChangeRowIndex); //System.Diagnostics.Debug.WriteLine("edit update:" + currChangeRowIndex);
isSubmited = true;
}
if (isSubmited)
{
bChged = false;
bNew = false;
}
};
dataGridView.CellValueChanged += (s, e) =>
{
bChged = true;
};
dataGridView.CellLeave += (s, e) =>
{
currChangeRowIndex = e.RowIndex;
};
dataGridView.Leave += (s, e) =>
{
//当GRID失去焦点时，判断提交数据的改变，并引发对应子操作
if (bNew)
{
//System.Diagnostics.Debug.WriteLine("new row(leave) update:" + currChangeRowIndex);
actExecPost(0, currChangeRowIndex);
bNew = false;
bChged = false;
}
if (!bChged) return;
//System.Diagnostics.Debug.WriteLine("ocx update:" + currChangeRowIndex);
actExecPost(1, currChangeRowIndex);
bChged = false;
};
dataGridView.UserAddedRow += (s, e) =>
{
bNew = true;
};
dataGridView.CancelRowEdit += (s, e) =>
{
bNew = false;
bChged = false;
};
#region 行头单元格选中,切换编辑或行选中
dataGridView.CellClick += (s, e) =>
{
if (e.RowIndex < 0) return;
if (e.ColumnIndex < 0)
{
dataGridView.EditMode = DataGridViewEditMode.EditOnKeystrokeOrF2;
dataGridView.SelectionMode = DataGridViewSelectionMode.FullRowSelect;
dataGridView.ClearSelection();
dataGridView.EndEdit();
dataGridView.Rows[e.RowIndex].Selected = true;
return;
}
dataGridView.EditMode = DataGridViewEditMode.EditOnEnter;
dataGridView.SelectionMode = DataGridViewSelectionMode.RowHeaderSelect;
};
#endregion
dataGridView.UserDeletingRow += (s, e) =>
{
//System.Diagnostics.Debug.WriteLine("delete:" + e.Row.Index);
actExecPost(2, e.Row.Index);
};
#endregion
}
