我刚做的一个TreeView的CheckBox进行选中插入数据库，从数据库中读取数据后让CheckBox勾选的代码!

#region 绑定角色
/// <summary>
/// 绑定权限信息
/// </summary>
protected void BindgvRoles()
{
string sql = "select * from GM_FileKind";
DataTable dt = OADBHelper.GetDataTable(sql);
this.gvRoles.DataSource = dt;
this.DataBind();
}
#endregion

#region TreeView 表员工表的显示至TreeView控件
/// <summary>
/// Tree绑定
/// </summary>
public void BindTree()
{
this.tvUsers.Nodes.Clear();
string sql = "select * from Accounts_UserDepartment";
DataView dv = OADBHelper.GetDataTable(sql).DefaultView;
//dv.RowFilter = "Kind=0";
foreach (DataRowView drv in dv)
{
TreeNode tn = new TreeNode();
tn.Text = drv["Dept"].ToString();
tn.Value = drv["AutoID"].ToString();
//tn.NavigateUrl = drv["KURL"].ToString();
tn.SelectAction = TreeNodeSelectAction.Expand;
tn.Expanded = false;
this.tvUsers.Nodes.Add(tn);
addChildNodes(tn);
}
}

/// <summary>
/// 绑定子节点
/// </summary>
/// <param name="tn"></param>
public void addChildNodes(TreeNode tn)
{
string sql = "select UserID,RealName from Accounts_Users where Dept='" + tn.Text + "'";
DataView dv = OADBHelper.GetDataTable(sql).DefaultView;
foreach (DataRowView drv in dv)
{
TreeNode childtn = new TreeNode();
childtn.Text = drv["RealName"].ToString();
childtn.Value = drv["UserID"].ToString();
//childtn.NavigateUrl = drv["KURL"].ToString();
childtn.Expanded = false;
tn.ChildNodes.Add(childtn);
addChildNodes(childtn);
}
}

#endregion

#region 从数据库中读取数据，然后勾选根节点的相应的CheckBox
/// <summary>
/// 从数据库中读取数据，然后勾选根节点的相应的CheckBox
/// </summary>
/// <param name="RoleId"></param>
protected void BindTreeRoot(int RoleId, TreeNodeCollection treenode)
{
string sql = "";
foreach (TreeNode nodes in treenode)
{
if (nodes.ChildNodes.Count > 0)
{
//查找所有权限的人的部门Id
sql = "select Distinct[DepId] from GM_Roles where FKId=" + RoleId;

DataView dv = OADBHelper.GetDataTable(sql).DefaultView;

foreach (DataRowView drv in dv)
{

foreach (TreeNode node in treenode)
{

if (drv["DepId"].ToString() == node.Value.ToString())
{
node.Checked = true;
}

BindTreeRoot(RoleId, node.ChildNodes);
}
}
}
else
{
//根据角色ID得到相应的的员工ID
sql = "select UserID from GM_Roles where FKId='" + RoleId + "'";

DataView dv = OADBHelper.GetDataTable(sql).DefaultView;

foreach (DataRowView drv in dv)
{

foreach (TreeNode node in treenode)
{

if (drv["UserID"].ToString() == node.Value.ToString())
{
node.Checked = true;
}

BindTreeRoot(RoleId, node.ChildNodes);
}
}
}

}
}
#endregion

#region 设置权限
/// <summary>
/// 设置权限
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected void lkbtnModify_Command(object sender, CommandEventArgs e)
{
int Id = Convert.ToInt32(e.CommandArgument.ToString());

ViewState["RoleId"] = Id;

BindTree();

string sql = "select FKName from GM_FileKind where FKId=" + Id;

lblRoles.Text = OADBHelper.GetString(sql);

BindTreeRoot(Id, this.tvUsers.Nodes);
}
#endregion

#region 权限设置操作
/// <summary>
/// 权限设置操作
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected void btnModify_Click(object sender, EventArgs e)
{
if (this.lblRoles.Text == "没有选择角色")
{
Response.Write("<script>alert('请选择一个角色名称！');</script>");
}
else
{
int RoleId = Convert.ToInt32(ViewState["RoleId"].ToString());

string sql = "select UserId from UserId where FKId=" + RoleId;

DeleteRoles(Convert.ToInt32(ViewState["RoleId"].ToString()));

this.GetCheckBoxChecked(this.tvUsers.Nodes);

Response.Write("<script>alert('角色设置成功！');</script>");

}
}
#endregion

#region 添加选定的人到角色表(checkbox选中的，插入数据库)

/// <summary>
/// 选择要添加的角色
/// </summary>
/// <param name="treeNode"></param>
private void GetCheckBoxChecked(TreeNodeCollection treeNode)
{
foreach (TreeNode node in treeNode)
{
if (node.Checked)
{

if (node.ChildNodes.Count == 0)
{
//执行保存
int UserId = Convert.ToInt32(node.Value.ToString());

InertRoleMember(Convert.ToInt32(ViewState["RoleId"].ToString()), UserId, Convert.ToInt32(ViewState["DepatId"].ToString()));

this.GetCheckBoxChecked(node.ChildNodes);
}
else
{

ViewState["DepatId"] = node.Value.ToString();

GetCheckBoxChecked(node.ChildNodes);

}

}
else
{
if (node.ChildNodes.Count > 0)
{
this.GetCheckBoxChecked(node.ChildNodes);
}
}
}
}
#endregion

#region 通过部门ID得到所有的人员Id
/// <summary>
/// 通过部门ID得到所有的人员Id
/// </summary>
/// <param name="DeptId"></param>
/// <returns></returns>
protected int GetUserIdByDeptId(int DeptId)
{
string strSql = "select Dept from Accounts_UserDepartment where AutoID=" + DeptId;

string DeptName = OADBHelper.GetString(strSql); //得到部门名称

strSql = "select UserID from Accounts_Users where Dept='" + DeptName + "'";

int UserId = Convert.ToInt32(OADBHelper.GetString(strSql));

return UserId;
}
#endregion

#region 根据选中的节点设置相应的权限人到数据库
/// <summary>
/// 根据选中的节点设置相应的权限人
/// </summary>
/// <param name="classId"></param>
/// <param name="RoleId"></param>
protected void InertRoleMember(int FKId, int UserId,int DeptId)
{
string sql = @"insert into GM_Roles(FKId,UserId,DepId)values('" + FKId + "','" + UserId + "','" + DeptId + "')";
OADBHelper.GetInt(sql);
}
#endregion

#region 根据角色Id删除相应的权限
/// <summary>
/// 根据角色Id删除相应的权限
/// </summary>
/// <param name="RoleId"></param>
protected void DeleteRoles(int RoleId)
{
string sql = @"delete from GM_Roles where FKId=" + RoleId;
OADBHelper.GetInt(sql);
}
#endregion

#region C#复选框的操作
/// <summary>
/// 复选框改变时的操作
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected void tvUsers_TreeNodeCheckChanged(object sender, TreeNodeEventArgs e)
{
SetChildChecked(e.Node);
}

/// <summary>

/// 根据父节点情况来选择子节点

/// </summary>

/// <param name="parentNode"></param>

private void SetChildChecked(TreeNode parentNode)
{
foreach (TreeNode node in parentNode.ChildNodes)
{
node.Checked = parentNode.Checked;
if (node.ChildNodes.Count > 0)
{
SetChildChecked(node);
}
}
}
#endregion