public static void InitDataGridViewColumns(DataGridView grid, DataRule dr)
{
if (grid == null || dr == null)
{
return;
}
grid.VirtualMode = true;
DataTable table = dr.GetFieldRule();
if (table != null)
{
DataGridViewColumn gcolumn;
DataRowCollection rows = table.Rows;
if (grid.Columns.Count > 0)
{
grid.Columns.Clear();
}
foreach (DataRow row in rows)
{
gcolumn = CreateDataGridViewColumn(RuleColumn.FromDataRow(row));
if (gcolumn != null)
{
grid.Columns.Add(gcolumn);
}
}
grid.EditingControlShowing -= new DataGridViewEditingControlShowingEventHandler(DataGridViewEditingControlShowing);
grid.EditingControlShowing += new DataGridViewEditingControlShowingEventHandler(DataGridViewEditingControlShowing);
}
}
public static bool InitTableSchemaFromDataRule(DataTable table, DataRule dr, string alias)
{
if (table == null || dr == null)
{
return(false);
}
try
{
DataTable ruletable = dr.GetFieldRule();
if (ruletable == null)
{
return(false);
}
DataRule olddr = TableUtil.GetDataRule(table);
if (olddr != null)
{
table.TableNewRow -= new DataTableNewRowEventHandler(olddr.OnTableNewRow);
table.ColumnChanged -= new DataColumnChangeEventHandler(olddr.OnColumnChanged);
}
table.TableNewRow += new DataTableNewRowEventHandler(dr.OnTableNewRow);
table.ColumnChanged += new DataColumnChangeEventHandler(dr.OnColumnChanged);
table.TableName = dr.RuleName;
TableUtil.SetProperty(table, SysConstant.scDataRule, dr);
TableUtil.SetProperty(table, SysConstant.scBindAlias, alias);
TableUtil.SetProperty(table, SysConstant.scPageManager, new PageManager(table));
DataColumnCollection columns = table.Columns;
DataColumn column;
RuleColumn rulecolumn;
DataRowCollection rows = ruletable.Rows;
if (columns.Count > 0)
{
if (table.Rows.Count > 0)
{
table.Rows.Clear();
}
columns.Clear();
}
for (int i = 0; i < rows.Count; i++)
{
rulecolumn = RuleColumn.FromDataRow(rows[i]);
column = new DataColumn(rulecolumn.ColumnName);
TableUtil.SetProperty(column, SysConstant.scRuleColumn, rulecolumn);
column.Caption = rulecolumn.Label;
column.DataType = DataTypes.ToType(rulecolumn.DataType);
if (rulecolumn.DataType == DataTypes.dtString)
{
column.MaxLength = rulecolumn.Size;
}
if (rulecolumn.HasDefValue)
{
column.AllowDBNull = rulecolumn.IsNullable;
}
columns.Add(column);
}
return(true);
}
catch (Exception e)
{
throw new Exception("SDP-ST02 填充元数据出错：" + e.Message);
}
}