//查询
private void buttonConditionSelect_Click(object sender, EventArgs e)
{
if (layer == null)
{
MessageBox.Show("请选择一个图层！");
return;
}
if (comboBoxConditionFieldName.Text == "" || comboBoxConditionFieldValue.Text == "" || comboBoxCondition.Text == "")
{
MessageBox.Show("请输入完整的查询条件！", "提示");
return;
}
GSOFeatureDataset featureDataset = layer.Dataset as GSOFeatureDataset;
EnumFieldType currentFieldType = EnumFieldType.Text;
if (featureDataset != null)
{
GSOFieldAttr field = featureDataset.GetField(comboBoxConditionFieldName.Text);
if (field != null)
{
switch (field.Type)
{
case EnumFieldType.Double:
case EnumFieldType.INT32:
currentFieldType = EnumFieldType.Double;
break;
case EnumFieldType.Date:
currentFieldType = EnumFieldType.Date;
break;
}
}
}
try
{
switch (comboBoxCondition.Text)
{
case "=":
for (int i = 0; i < layer.GetAllFeatures().Length; i++)
{
GSOFeature feature = layer.GetAt(i);
if (feature != null && feature.GetValue(comboBoxConditionFieldName.Text).ToString() == comboBoxConditionFieldValue.Text)
{
features.Add(feature);
}
}
break;
case ">=":
for (int i = 0; i < layer.GetAllFeatures().Length; i++)
{
GSOFeature feature = layer.GetAt(i);
if (currentFieldType == EnumFieldType.Double)
{
if (feature != null && Double.Parse(feature.GetFieldAsDataTime(comboBoxConditionFieldName.Text).ToString()) >= Double.Parse(comboBoxConditionFieldValue.Text))
{
features.Add(feature);
}
}
else if (currentFieldType == EnumFieldType.Date)
{
if (feature != null && DateTime.Parse(feature.GetFieldAsDataTime(comboBoxConditionFieldName.Text).ToString()) >= DateTime.Parse(comboBoxConditionFieldValue.Text))
{
features.Add(feature);
}
}
}
break;
case "<=":
for (int i = 0; i < layer.GetAllFeatures().Length; i++)
{
GSOFeature feature = layer.GetAt(i);
if (currentFieldType == EnumFieldType.Double)
{
if (feature != null && Double.Parse(feature.GetFieldAsDataTime(comboBoxConditionFieldName.Text).ToString()) <= Double.Parse(comboBoxConditionFieldValue.Text))
{
features.Add(feature);
}
}
else if (currentFieldType == EnumFieldType.Date)
{
if (feature != null && DateTime.Parse(feature.GetFieldAsDataTime(comboBoxConditionFieldName.Text).ToString()) <= DateTime.Parse(comboBoxConditionFieldValue.Text))
{
features.Add(feature);
}
}
}
break;
case ">":
for (int i = 0; i < layer.GetAllFeatures().Length; i++)
{
GSOFeature feature = layer.GetAt(i);
if (currentFieldType == EnumFieldType.Double)
{
if (feature != null && Double.Parse(feature.GetFieldAsDataTime(comboBoxConditionFieldName.Text).ToString()) > Double.Parse(comboBoxConditionFieldValue.Text))
{
features.Add(feature);
}
}
else if (currentFieldType == EnumFieldType.Date)
{
if (feature != null && DateTime.Parse(feature.GetFieldAsDataTime(comboBoxConditionFieldName.Text).ToString()) > DateTime.Parse(comboBoxConditionFieldValue.Text))
{
features.Add(feature);
}
}
}
break;
case "<":
for (int i = 0; i < layer.GetAllFeatures().Length; i++)
{
GSOFeature feature = layer.GetAt(i);
if (currentFieldType == EnumFieldType.Double)
{
if (feature != null && Double.Parse(feature.GetFieldAsDataTime(comboBoxConditionFieldName.Text).ToString()) < Double.Parse(comboBoxConditionFieldValue.Text))
{
features.Add(feature);
}
}
else if (currentFieldType == EnumFieldType.Date)
{
if (feature != null && DateTime.Parse(feature.GetFieldAsDataTime(comboBoxConditionFieldName.Text).ToString()) < DateTime.Parse(comboBoxConditionFieldValue.Text))
{
features.Add(feature);
}
}
}
break;
}
if (features == null)
{
MessageBox.Show("请重新输入查询条件！", "提示");
return;
}
if (features.Length == 0)
{
MessageBox.Show("没有找到符合查询条件的对象！", "提示");
return;
}
SetDataTable(features);
}
catch (Exception ex)
{
Log.PublishTxt(ex);
MessageBox.Show(ex.Message, "提示");
return;
}
}
