一个很简单的SqlServer生成常用C#语句工具的诞生

/// <summary>
/// Xml生成实体集合
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="xmlpath"></param>
/// <returns></returns>
public static List<T> getxmltomodel<T>(string xmlpath)
{
try
{
#region 遍历xml
XmlDocument _xm = new XmlDocument();
_xm.Load(xmlpath);

XmlNodeList xmList = _xm.SelectNodes("/pma_xml_export/database/table");
List<T> _ls = new List<T>();
foreach (XmlNode pageNode in xmList)
{

T _m = Activator.CreateInstance<T>();
foreach (PropertyInfo pi in typeof(T).GetProperties())
{

foreach (XmlNode nd in pageNode.ChildNodes)
{
XmlElement element = (XmlElement)nd;
if (element.GetAttribute("name") == pi.Name)
{
object value = null;
value = element.InnerText;
Type type = pi.GetType();
pi.SetValue(_m, Convert.ChangeType(value, pi.PropertyType), null);
}
}

}
_ls.Add((T)_m);

}
#endregion

return _ls;
}
catch
{
return null;
}

}

　　

select * from [sysdatabases] order by [name]

select [id], [name] from [sysobjects] where [type] = 'u' order by [name]

/// <summary>
/// 获取表信息
/// </summary>
/// <param name="tablename"></param>
/// <returns></returns>
public DataTable GetTableInfo(string tablename)
{ try
{
string sql = string.Format(@"
SELECT
表名       = d.name,--case when a.colorder=1 then d.name else '' end,
表说明     = case when a.colorder=1 then isnull(f.value,'') else '' end,
字段序号   = a.colorder,
fieldname     = a.name,
标识       = case when COLUMNPROPERTY( a.id,a.name,'IsIdentity')=1 then '√'else '' end,
主键       = case when exists(SELECT 1 FROM sysobjects where xtype='PK' and parent_obj=a.id and name in (
SELECT name FROM sysindexes WHERE indid in(
SELECT indid FROM sysindexkeys WHERE id = a.id AND colid=a.colid))) then '√' else '' end,
sqltype       = b.name,
占用字节数 = a.length,
长度       = COLUMNPROPERTY(a.id,a.name,'PRECISION'),
小数位数   = isnull(COLUMNPROPERTY(a.id,a.name,'Scale'),0),
允许空     = case when a.isnullable=1 then '√'else '' end,
默认值     = isnull(e.text,''),
fieldexplain   = isnull(g.[value],'')
FROM
syscolumns a
left join
systypes b
on
a.xusertype=b.xusertype
inner join
sysobjects d
on
a.id=d.id  and d.xtype='U' and  d.name<>'dtproperties'
left join
syscomments e
on
a.cdefault=e.id
left join

sys.extended_properties g
on
a.id=g.major_id and a.colid=g.minor_id
left join
sys.extended_properties f
on
d.id=f.major_id and f.minor_id=0
where
d.name='{0}'    --如果只查询指定表,加上此条件
order by
a.id,a.colorder", tablename);
return Service.Data.SqlHelper.DataTable(sql);
}
catch (Exception ex)
{
throw (ex);
}
}
}

//我在替换中使用的一些占位符

[tablename] 可替换表的名称
/**************************/
[list][list]为多字段循环列表
[list=1][/list]多字段循环列表,会自动去掉最后元素的最后一个符号。
/**************************/
循环体内容中可替换内容有：
[fieldname] 字段名称
[sqltype] 字段类型
[fieldexplain] 字段说明

/**************************/
[replace=xxx][/replace]筛选替换循环体内的变量。
xxx可填：sqltype、fieldname、fieldexplain

/// <summary>
/// 定义登陆成供事件委托
/// </summary>
public delegate void LoginSuccess();
/// <summary>
/// 定义登陆成功事件
/// </summary>
public  event LoginSuccess  LoginSuccessEvent;

/// <summary>
/// 触发登陆成功事件
/// </summary>
protected virtual void OnLoginSuccessEvent()
{
var handler = LoginSuccessEvent;
if (handler != null) handler();
}

private void button1_Click(object sender, EventArgs e)
{
this.OnLoginSuccessEvent();
}

private void main_Load(object sender, EventArgs e)
{
login lg=new login();
lg.LoginSuccessEvent += LoginSuccess;
lg.Show();
}

void LoginSuccess()
{
textBox1.Text = DateTime.Now.ToString("u");
}