private void createFieldToolStripMenuItem_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 dset = null;
IFeatureClass fc = null;
try
{
ds = dsFactory.OpenDataSource(ci);
dset = ds.OpenFeatureDataset(set_name);
fc = dset.OpenFeatureClass(fc_name);
OperateFieldInfoForm form = new OperateFieldInfoForm(null);
if (form.ShowDialog() == DialogResult.OK)
{
IFieldInfoCollection fieldinfos = fc.GetFields();
IFieldInfo newFieldInfo = form.newFieldInfo;
for (int i = 0; i < fieldinfos.Count; i++)
{
IFieldInfo fieldinfo = fieldinfos.Get(i);
if (null == fieldinfo)
{
continue;
}
if (newFieldInfo.Name == fieldinfo.Name)
{
MessageBox.Show("已有同名字段，添加失败");
return;
}
}
fc.LockType = gviLockType.gviLockExclusiveSchema;
fc.AddField(newFieldInfo);
fc.LockType = gviLockType.gviLockSharedSchema;
// 往树上挂节点
TreeNode fieldNode = new TreeNode(newFieldInfo.Name, 1, 1);
selectNode.Nodes.Add(fieldNode);
fieldNode.ContextMenuStrip = this.contextMenuStrip4;
}
}
catch (COMException comEx)
{
System.Diagnostics.Trace.WriteLine(comEx.Message);
MessageBox.Show("添加失败");
}
catch (System.Exception ex)
{
System.Diagnostics.Trace.WriteLine(ex.Message);
MessageBox.Show("添加失败");
}
finally
{
fc.LockType = gviLockType.gviLockSharedSchema;
if (fc != null)
{
//Marshal.ReleaseComObject(fc);
fc = null;
}
if (dset != null)
{
//Marshal.ReleaseComObject(dset);
dset = null;
}
if (ds != null)
{
//Marshal.ReleaseComObject(ds);
ds = null;
}
}
}
private void modifyFieldToolStripMenuItem_Click(object sender, EventArgs e)
{
string fieldInfo_name = selectNode.Text;
string fc_name = selectNode.Parent.Text;
string set_name = selectNode.Parent.Parent.Text;
myTreeNode node = (myTreeNode)selectNode.Parent.Parent.Parent;
IConnectionInfo ci = node.con;
IDataSource ds = null;
IFeatureDataSet dset = null;
IFeatureClass fc = null;
IFieldInfo newFieldInfo = null;
try
{
ds = dsFactory.OpenDataSource(ci);
dset = ds.OpenFeatureDataset(set_name);
fc = dset.OpenFeatureClass(fc_name);
// 获取fieldinfo对象
IFieldInfoCollection fieldinfos = fc.GetFields();
for (int i = 0; i < fieldinfos.Count; i++)
{
IFieldInfo fieldinfo = fieldinfos.Get(i);
if (null == fieldinfo)
{
continue;
}
if (fieldInfo_name == fieldinfo.Name)
{
newFieldInfo = fieldinfo;
break;
}
}
OperateFieldInfoForm form = new OperateFieldInfoForm(newFieldInfo);
if (form.ShowDialog() == DialogResult.OK)
{
newFieldInfo = form.newFieldInfo;
fc.LockType = gviLockType.gviLockExclusiveSchema;
fc.ModifyField(newFieldInfo);
fc.LockType = gviLockType.gviLockSharedSchema;
// 修改树上的节点
selectNode.Text = newFieldInfo.Name;
MessageBox.Show("修改成功");
}
}
catch (COMException comEx)
{
System.Diagnostics.Trace.WriteLine(comEx.Message);
MessageBox.Show("修改失败");
}
catch (System.Exception ex)
{
System.Diagnostics.Trace.WriteLine(ex.Message);
MessageBox.Show("修改失败");
}
finally
{
fc.LockType = gviLockType.gviLockSharedSchema;
if (newFieldInfo != null)
{
//Marshal.ReleaseComObject(newFieldInfo);
newFieldInfo = null;
}
if (fc != null)
{
//Marshal.ReleaseComObject(fc);
fc = null;
}
if (dset != null)
{
//Marshal.ReleaseComObject(dset);
dset = null;
}
if (ds != null)
{
//Marshal.ReleaseComObject(ds);
ds = null;
}
}
}
