构建TreeView无限制级的树形?????

Jason009
SileveLong
等级:

发表于：2008-04-28 18:00:2915楼得分:0

我的代码如下，但，感觉还是不是很好，有什么更好的方法吗？？
#region 创建模块组树
private void AddTreeViewData()
{
RoleTreeNode firstTreeNode = null;
int moduleID = -1;
string filterStr = null;
string moduleGroupName = null;
string moduleGroupCode = "";
int moduleGroupCount = 0;
int length = 4;

this.dtModuleList = this.dsModuleOperateList.Tables["AdmModGroup"];

length = moduleGroupCode.Trim().Length + 4;

filterStr = "LEN(ModuleGroupCode) = " + length.ToString();
DataView dvModuleGroup = new DataView(this.dtModuleList, filterStr, "ModuleGroupCode", DataViewRowState.CurrentRows);

moduleGroupCount = dvModuleGroup.Count;

if (moduleGroupCount <= 0) return;

for (int i = 0; i < moduleGroupCount; i++)
{
//增加第一节点(模块组AdmModuleGroup中modulegroupcode编码长度等于８的级别)
firstTreeNode = new RoleTreeNode();
moduleGroupName = dvModuleGroup[i]["ModuleGroupName"].ToString();
moduleGroupCode = dvModuleGroup[i]["ModuleGroupCode"].ToString();
moduleID = Convert.IsDBNull(dvModuleGroup[i]["ModuleID"]) ? -1 : int.Parse(dvModuleGroup[i]["ModuleID"].ToString());

firstTreeNode.ModuleGroupCode = moduleGroupCode;
firstTreeNode.RoleCode = this.roleCode;
firstTreeNode.AccountID = this.currentAccountID;
firstTreeNode.NodeType = 0;
firstTreeNode.ModuleID = moduleID;
firstTreeNode.Text = moduleGroupName;
firstTreeNode.ImageIndex = 0;
firstTreeNode.SelectedImageIndex = 1;

this.treeViewEx1.Nodes.Add(firstTreeNode);

//增加模块组AdmModuleGroup中modulegroupcode编码长度大于等于１２的所有子级
AddSecondTreeNode(firstTreeNode, moduleID, moduleGroupCode);
//增加功能节点
AddTreeOpr(firstTreeNode, moduleID, moduleGroupCode);
}
}

private void AddSecondTreeNode(RoleTreeNode treeNode, int moduleID, string moduleGroupCode)
{
//增加模块组AdmModuleGroup中modulegroupcode编码长度大于等于１２的所有子级
int length = 4;
string filterStr = "";
string nextModuleGroupName = "";
string nextModuleGroupCode = "";
RoleTreeNode secondTreeNode = null;

this.dtModuleList = this.dsModuleOperateList.Tables["AdmModGroup"];

length = moduleGroupCode.Trim().Length + 4;
filterStr = "LEN(ModuleGroupCode) = " + length.ToString() + " and ModuleGroupCode like '" + moduleGroupCode + "%'";
DataView dv = new DataView(this.dtModuleList, filterStr, "ModuleGroupCode", DataViewRowState.CurrentRows);

for (int j = 0; j < dv.Count; j++)
{
secondTreeNode = new RoleTreeNode();
nextModuleGroupName = dv[j]["ModuleGroupName"].ToString();
nextModuleGroupCode = dv[j]["ModuleGroupCode"].ToString();
moduleID = Convert.IsDBNull(dv[j]["ModuleID"]) ? -1 : int.Parse(dv[j]["ModuleID"].ToString());
secondTreeNode.ModuleID = moduleID;
secondTreeNode.RoleCode = this.roleCode;
secondTreeNode.AccountID = this.currentAccountID;
secondTreeNode.ModuleGroupCode = nextModuleGroupCode;
secondTreeNode.NodeType = nextModuleGroupCode.Trim().Length / 4 - 1;
secondTreeNode.Text = nextModuleGroupName;
secondTreeNode.ImageIndex = 0;
secondTreeNode.SelectedImageIndex = 1;
treeNode.Nodes.Add(secondTreeNode);

if (moduleID < 0)
AddSecondTreeNode(secondTreeNode, moduleID, nextModuleGroupCode);//增加模块组AdmModuleGroup中modulegroupcode编码长度大于等于１２的所有子级
else
AddTreeOpr(secondTreeNode, moduleID, nextModuleGroupCode);//增加功能节点
}
}

private void AddTreeOpr(RoleTreeNode treeNode, int moduleID, string moduleGroupCode)
{
//增加各模块操作节点
this.dtOprList = this.dsModuleOperateList.Tables["AdmModOpr"];
string filterStr = "ModuleID = " + moduleID.ToString();
DataView dvOpr = new DataView(this.dtOprList, filterStr, "OprCode", DataViewRowState.CurrentRows);

if (dvOpr.Count <= 0) return;

RoleTreeNode threeTreeNode = null;

for (int k = 0; k < dvOpr.Count; k++)
{
threeTreeNode = new RoleTreeNode();
threeTreeNode.OprCode = dvOpr[k]["OprCode"].ToString();
threeTreeNode.ModuleID = Convert.IsDBNull(dvOpr[k]["ModuleID"]) ? -1 : int.Parse(dvOpr[k]["ModuleID"].ToString());
threeTreeNode.ModuleGroupCode = moduleGroupCode;
threeTreeNode.RoleCode = this.roleCode;
threeTreeNode.AccountID = this.currentAccountID;
threeTreeNode.NodeType = 3;
threeTreeNode.Text = dvOpr[k]["OprName"].ToString();
threeTreeNode.ImageIndex = 0;
threeTreeNode.SelectedImageIndex = 1;
treeNode.Nodes.Add(threeTreeNode);

//处理已在数据表中存在的子节点
filterStr = "AccountID = " + this.currentAccountID +
"and RoleCode = '" + this.roleCode + "'" +
"and OprCode = '" + dvOpr[k]["OprCode"].ToString() + "'" +
"and ModuleID = " + dvOpr[k]["ModuleID"].ToString();
DataView dvChenkOpr = new DataView(this.dataSetRoleData1.ADMROLERIGHT, filterStr, "OprCode", DataViewRowState.CurrentRows);
if (dvChenkOpr.Count > 0)
threeTreeNode.Checked = true;
}

}
#endregion

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