DevExpress設置TreeList圖片節點配景色的辦法。本站提示廣大學習愛好者：（DevExpress設置TreeList圖片節點配景色的辦法）文章只能為提供參考，不一定能成為您想要的結果。以下是DevExpress設置TreeList圖片節點配景色的辦法正文
本文實例展現了DevExpress設置TreeList圖片節點配景色的辦法，在項目開辟中有必定的運用價值，詳細辦法以下所示：
重要功效代碼以下：
/// <summary>
/// 設置圖片節點的配景色
/// 解釋：在CustomDrawNodeImages事宜中應用
/// </summary>
/// <param name="tree">TreeList</param>
/// <param name="e">CustomDrawNodeImagesEventArgs</param>
/// <param name="builderBackColorHandler">拜托</param>
public static void CustomImageNodeBackColor(this TreeList tree, CustomDrawNodeImagesEventArgs e, Func<TreeListNode, Color> builderBackColorHandler)
{
TreeListNode _node = e.Node;
Color _backColor = builderBackColorHandler(_node);
e.Graphics.FillRectangle(new SolidBrush(_backColor), e.Bounds);
}
代碼應用辦法以下：
private void tlLHData_CustomDrawNodeImages(object sender, CustomDrawNodeImagesEventArgs e)
{
try
{
tlLHData.CustomImageNodeBackColor(e, node =>
{
string _cabId = node.GetKeyID();
CCabInfo _cabInfo = LHDBHelper.GetCabInfo(_cabId);
if (_cabInfo != null)
{
return _cabInfo.CtuOnlineStatus == 1 ? Color.White : Color.LightGray;
}
return Color.White;
});
}
catch (Exception)
{
}
}
代碼運轉後果以下圖所示：
g System;
using System.Collections.Generic;
using System.Collections;
using System.Linq;
using System.Text;
using System.Configuration;
namespace AppConfig
{
class Program
{
static void Main(string[] args)
{
Console.WriteLine("ConnectionStrings:");
// ConfigurationManager.ConnectionStrings是一個ConnectionStringSettingsCollection對象
// 按數字輪回獲得一個個ConnectionStringSettings對象
// 每一個ConnectionStringSettings對象有Name和ConnectionString屬性
for (int i = 0; i < ConfigurationManager.ConnectionStrings.Count; i++)
{
string name = ConfigurationManager.ConnectionStrings[i].Name;
string connectionString = ConfigurationManager.ConnectionStrings[i].ConnectionString;
Console.WriteLine(i.ToString() + ". " + name + " = " + connectionString);
}
//也能夠以下操作，應用ConnectionStringSettings類型來停止foreach遍歷
foreach (ConnectionStringSettings conn in ConfigurationManager.ConnectionStrings)
{
string name = conn.Name;
string connectionString = conn.ConnectionString;
Console.WriteLine(name + " = " + connectionString);
}
//直接獲得conn的值
Console.WriteLine("\r\nGet the value of the node named \"conn\":");
Console.WriteLine(ConfigurationManager.ConnectionStrings["conn"].ConnectionString);
Console.WriteLine("");
Console.WriteLine("AppSettings:");
//AppSettings是NameValueConnection類型，應用AllKeys前往一個一切Key構成的字符串數組
string[] keys = ConfigurationManager.AppSettings.AllKeys;
for (int i = 0; i < keys.Length; i++)
{
string key = keys[i];
//經由過程Key來索引Value
string value = ConfigurationManager.AppSettings[key];
Console.WriteLine(i.ToString() + ". " + key + " = " + value);
}
// 沒有NameValuePair如許的對象，所以沒法應用foreach來停止輪回
//直接獲得key1的值
Console.WriteLine("\r\nGet the value of the key named \"key1\":");
Console.WriteLine(ConfigurationManager.AppSettings["key1"]);
//pause the process
Console.ReadKey();
}
}
}
下面演示了若何遍歷<connectionStrings>，若何遍歷<appSettings>，若何零丁獲得某一個connectionString，若何零丁獲得某個appSetting。年夜家可以珍藏一下，以便今後應用時參考。
App.config和Web.config的語法格局是完整一樣的，只是一個用戶WinForm法式，一個用於Web法式。
App.config在編譯以後，將會被編譯到bin\Debug目次下，文件名為“運用法式名.exe.config”。
關於C#中App.config文件的應用，本文就引見這麼多，願望對您有所贊助，感謝！
