/// 构造一棵树型表结构

/// </summary>

/// <returns></returns>

private DataTable CreateTreeListTable()

{

DataTable dt = new DataTable();

DataColumn dcOID = new DataColumn("KeyFieldName", Type.GetType("System.Int32"));

DataColumn dcParentOID = new DataColumn("ParentFieldName", Type.GetType("System.Int32"));

DataColumn dcNodeName = new DataColumn("NodeName", Type.GetType("System.String"));

DataColumn dcNodeCode = new DataColumn("NodeCode", Type.GetType("System.String"));

DataColumn dcOthers = new DataColumn("Others", Type.GetType("System.String"));

dt.Columns.Add(dcOID);

dt.Columns.Add(dcParentOID);

dt.Columns.Add(dcNodeName);

dt.Columns.Add(dcNodeCode);

dt.Columns.Add(dcOthers);

//以上代码完成了DataTable的构架，但是里面是没有任何数据的

DataRow dr1 = dt.NewRow();

dr1["KeyFieldName"] = 1;

dr1["ParentFieldName"] = DBNull.Value;

dr1["NodeName"] = "根节点名称";

dr1["NodeCode"] = "根节点编码";

dr1["Others"] = "其他";

dt.Rows.Add(dr1);

DataRow dr2 = dt.NewRow();

dr2["KeyFieldName"] = 2;

dr2["ParentFieldName"] = 1;

dr2["NodeName"] = "节点子节点名称";

dr2["NodeCode"] = "节点子节点编码";

dr2["Others"] = "其他";

dt.Rows.Add(dr2);

DataRow dr3 = dt.NewRow();

dr3["KeyFieldName"] = 3;

dr3["ParentFieldName"] = 1;

dr3["NodeName"] = "节点子节点名称";

dr3["NodeCode"] = "节点子节点编码";

dr3["Others"] = "其他";

dt.Rows.Add(dr3);

DataRow dr4 = dt.NewRow();

dr4["KeyFieldName"] = 4;

dr4["ParentFieldName"] = DBNull.Value;

dr4["NodeName"] = "根节点名称";

dr4["NodeCode"] = "根节点编码";

dr4["Others"] = "其他";

dt.Rows.Add(dr4);

DataRow dr5 = dt.NewRow();

dr5["KeyFieldName"] = 5;

dr5["ParentFieldName"] = 4;

dr5["NodeName"] = "节点子节点名称";

dr5["NodeCode"] = "节点子节点编码";

dr5["Others"] = "其他";

dt.Rows.Add(dr5);

DataRow dr6 = dt.NewRow();

dr6["KeyFieldName"] = 6;

dr6["ParentFieldName"] = 5;

dr6["NodeName"] = "节点子节点名称";

dr6["NodeCode"] = "节点子节点编码";

dr6["Others"] = "其他";

dt.Rows.Add(dr6);

return dt;

}

好了，一个TreeList构造完成，下面就是TreeList的一些常用用法，都比较简单，这里就直接上代码了，代码中有简单的注释，大家一看就明白哦。

代码

/// <summary>

/// 点击节点前

/// </summary>

/// <param name="sender"></param>

/// <param name="e"></param>

private void treeLstModuleAction_BeforeCheckNode(object sender, DevExpress.XtraTreeList.CheckNodeEventArgs e)

{

e.State = (e.PrevState == CheckState.Checked ? CheckState.Unchecked : CheckState.Checked);

}

/// <summary>

/// 点击节点后

/// </summary>

/// <param name="sender"></param>

/// <param name="e"></param>

private void treeLstModuleAction_AfterCheckNode(object sender, DevExpress.XtraTreeList.NodeEventArgs e)

{

SetCheckedChildNodes(e.Node, e.Node.CheckState);

SetCheckedParentNodes(e.Node, e.Node.CheckState);

}

/// <summary>

/// 选择子节点时触发

/// </summary>

/// <param name="node"></param>

/// <param name="check"></param>

private void SetCheckedChildNodes(TreeListNode node, CheckState check)

{

for (int i = 0; i < node.Nodes.Count; i++)

{

node.Nodes[i].CheckState = check;

SetCheckedChildNodes(node.Nodes[i], check);

}

}

/// <summary>

/// 选择父节点时触发

/// </summary>

/// <param name="node"></param>

/// <param name="check"></param>

private void SetCheckedParentNodes(TreeListNode node, CheckState check)

{

if (node.ParentNode != null)

{

bool b = false;

CheckState state;

for (int i = 0; i < node.ParentNode.Nodes.Count; i++)

{

state = (CheckState)node.ParentNode.Nodes[i].CheckState;

if (!check.Equals(state))

{

b = !b;

break;

}

}

node.ParentNode.CheckState = b ? CheckState.Indeterminate : check;

SetCheckedParentNodes(node.ParentNode, check);

}

}

/// <summary>

/// 判断此节点下的所有孩子节点是否选中

/// </summary>

/// <param name="node"></param>

/// <returns></returns>

private Boolean IsChildsChecked(TreeListNode node)

{

for (int i = 0; i < node.Nodes.Count; i++)

{

if (node.Nodes[i].CheckState == CheckState.Unchecked)

return false;

if (node.Nodes[i].HasChildren)

IsChildsChecked(node.Nodes[i]);

}

return true;

}

好了，至此，关于TreeList的一些常用用法就说到这了，大家如果有好的想法，请不吝赐教，谢谢！