/// <summary>
/// 按属性条件查询
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void toolStripMenuItemQuery_Click(object sender, EventArgs e)
{
QueryFilterDlg dlg = new QueryFilterDlg();
string fc_name = selectNode.Text;
List<string> fieldNames = controlOperation.GetFieldNamesByFeatureName(fc_name);
dlg.FieldList_listBox.DataSource = fieldNames;
if (dlg.ShowDialog() == DialogResult.OK)
{
string whereClause = dlg.QueryFilter_txt.Text.Trim();
DataTable dt = controlOperation.BuildDataTableByFeatureName(fc_name, whereClause);
new AttributeForm(dt, fc_name, whereClause).Show();
}
}
private void toolStripMenuItemQuery_Click(object sender, EventArgs e)
{
string fc_name = selectNode.Text;
string set_name = selectNode.Parent.Text;
myTreeNode node = (myTreeNode)selectNode.Parent.Parent;
IConnectionInfo ci = node.con;
IDataSource ds = null;
IFeatureDataSet dataset = null;
IFeatureClass fc = null;
try
{
ds = dsFactory.OpenDataSource(ci);
dataset = ds.OpenFeatureDataset(set_name);
fc = dataset.OpenFeatureClass(fc_name);
QueryFilterDlg pQueryFilterDlg = new QueryFilterDlg();
for (int index = 0; index < fc.GetFields().Count; index++)
{
pQueryFilterDlg.FieldList_listBox.Items.Add(fc.GetFields().Get(index).Name);
}
if (DialogResult.OK == pQueryFilterDlg.ShowDialog())
{
IQueryFilter filter = new QueryFilter();
filter.WhereClause = pQueryFilterDlg.QueryFilter_txt.Text;
int nCount = fc.GetCount(filter);
if (nCount == 0)
{
return;
}
// 初始化表格
DataTable dt = CreateDataTable(fc);
// 查找数据
GetResultSet(fc, filter, dt);
// 显示表格
new AttributeFrm(dt, fc.Name, filter.WhereClause).Show();
}
}
catch (COMException ex)
{
System.Diagnostics.Trace.WriteLine(ex.Message);
}
finally
{
if (ds != null)
{
//Marshal.ReleaseComObject(ds);
ds = null;
}
if (dataset != null)
{
//Marshal.ReleaseComObject(dataset);
dataset = null;
}
if (fc != null)
{
//Marshal.ReleaseComObject(fc);
fc = null;
}
}
}
