/// <summary>
/// 更新一条数据
/// </summary>
public bool Update(book_shop.Model.sysdiagramsModel model)
{
StringBuilder strSql = new StringBuilder();
strSql.Append("update sysdiagrams set ");
strSql.Append("version=@version,");
strSql.Append("definition=@definition");
strSql.Append(" where diagram_id=@diagram_id");
SqlParameter[] parameters =
{
new SqlParameter("@version", SqlDbType.Int, 4),
new SqlParameter("@definition", SqlDbType.VarBinary, -1),
new SqlParameter("@name", SqlDbType.NVarChar, 128),
new SqlParameter("@principal_id", SqlDbType.Int, 4),
new SqlParameter("@diagram_id", SqlDbType.Int, 4)
};
parameters[0].Value = model.version;
parameters[1].Value = model.definition;
parameters[2].Value = model.name;
parameters[3].Value = model.principal_id;
parameters[4].Value = model.diagram_id;
int rows = DbHelperSQL.ExecuteSql(strSql.ToString(), parameters);
if (rows > 0)
{
return(true);
}
else
{
return(false);
}
}
/// <summary>
/// 得到一个对象实体
/// </summary>
public book_shop.Model.sysdiagramsModel DataRowToModel(DataRow row)
{
book_shop.Model.sysdiagramsModel model = new book_shop.Model.sysdiagramsModel();
if (row != null)
{
if (row["name"] != null)
{
model.name = row["name"].ToString();
}
if (row["principal_id"] != null && row["principal_id"].ToString() != "")
{
model.principal_id = int.Parse(row["principal_id"].ToString());
}
if (row["diagram_id"] != null && row["diagram_id"].ToString() != "")
{
model.diagram_id = int.Parse(row["diagram_id"].ToString());
}
if (row["version"] != null && row["version"].ToString() != "")
{
model.version = int.Parse(row["version"].ToString());
}
if (row["definition"] != null && row["definition"].ToString() != "")
{
model.definition = (byte[])row["definition"];
}
}
return(model);
}
/// <summary>
/// 增加一条数据
/// </summary>
public int Add(book_shop.Model.sysdiagramsModel model)
{
StringBuilder strSql = new StringBuilder();
strSql.Append("insert into sysdiagrams(");
strSql.Append("name,principal_id,version,definition)");
strSql.Append(" values (");
strSql.Append("@name,@principal_id,@version,@definition)");
strSql.Append(";select @@IDENTITY");
SqlParameter[] parameters =
{
new SqlParameter("@name", SqlDbType.NVarChar, 128),
new SqlParameter("@principal_id", SqlDbType.Int, 4),
new SqlParameter("@version", SqlDbType.Int, 4),
new SqlParameter("@definition", SqlDbType.VarBinary, -1)
};
parameters[0].Value = model.name;
parameters[1].Value = model.principal_id;
parameters[2].Value = model.version;
parameters[3].Value = model.definition;
object obj = DbHelperSQL.GetSingle(strSql.ToString(), parameters);
if (obj == null)
{
return(0);
}
else
{
return(Convert.ToInt32(obj));
}
}
/// <summary>
/// 得到一个对象实体
/// </summary>
public book_shop.Model.sysdiagramsModel GetModel(int diagram_id)
{
StringBuilder strSql = new StringBuilder();
strSql.Append("select top 1 name,principal_id,diagram_id,version,definition from sysdiagrams ");
strSql.Append(" where diagram_id=@diagram_id");
SqlParameter[] parameters =
{
new SqlParameter("@diagram_id", SqlDbType.Int, 4)
};
parameters[0].Value = diagram_id;
book_shop.Model.sysdiagramsModel model = new book_shop.Model.sysdiagramsModel();
DataSet ds = DbHelperSQL.Query(strSql.ToString(), parameters);
if (ds.Tables[0].Rows.Count > 0)
{
return(DataRowToModel(ds.Tables[0].Rows[0]));
}
else
{
return(null);
}
}
