详解C#动态创建Access数据库及密码
以前工作中需要全新的Access数据库,可以复制数据库,也可以把新的数据库放到资源里面,用新数据库的时候释放出来,都感觉不爽,还是动态生成心理舒服。
生成数据库要使用ADO,首先添加引用。
using System.IO;
using System.Data.OleDb; //连接Access数据库
using ADOX;
//引用COM:Microsoft ADO Ext. 2.8 for DDL and Security
//添加引用:Microsoft ActioveX Data Objects 2.8 Library
using System.Data.OleDb; //连接Access数据库
using ADOX;
//引用COM:Microsoft ADO Ext. 2.8 for DDL and Security
//添加引用:Microsoft ActioveX Data Objects 2.8 Library
创建数据库:
然后使用ADODB创建数据库,直接看代码:
string conn = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + fileName;
//创建数据库
ADOX.Catalog catalog = new Catalog();
try
{
catalog.Create(conn);
}
catch {}
//连接数据库 ADODB.Connection cn = new
ADODB.Connection();
cn.Open(conn, null, null, -1);
catalog.ActiveConnection = cn;
//新建表
ADOX.Table table = new ADOX.Table();
table.Name = "AdPlayList";
ADOX.Column column = new ADOX.Column();
column.ParentCatalog = catalog;
column.Type = ADOX.DataTypeEnum.adInteger; // 必须先设置字段类型
column.Name = "ID";
column.DefinedSize = 9;
column.Properties["AutoIncrement"].Value = true;
table.Columns.Append(column, DataTypeEnum.adInteger, 0); //设置主键
table.Keys.Append("PrimaryKey", ADOX.KeyTypeEnum.adKeyPrimary, "ID", "", "");
table.Columns.Append("FileName", DataTypeEnum.adVarWChar, 50);
table.Columns.Append("FileDate", DataTypeEnum.adDate, 0);
table.Columns.Append("FileSize", DataTypeEnum.adInteger, 9);
table.Columns.Append("OrderID", DataTypeEnum.adInteger, 9);
table.Columns.Append("Sha1", DataTypeEnum.adVarWChar, 50);
try
{
catalog.Tables.Append(table);
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
//此处一定要关闭连接,否则添加数据时候会出错
table = null;
catalog = null;
Application.DoEvents();
cn.Close();
//创建数据库
ADOX.Catalog catalog = new Catalog();
try
{
catalog.Create(conn);
}
catch {}
//连接数据库 ADODB.Connection cn = new
ADODB.Connection();
cn.Open(conn, null, null, -1);
catalog.ActiveConnection = cn;
//新建表
ADOX.Table table = new ADOX.Table();
table.Name = "AdPlayList";
ADOX.Column column = new ADOX.Column();
column.ParentCatalog = catalog;
column.Type = ADOX.DataTypeEnum.adInteger; // 必须先设置字段类型
column.Name = "ID";
column.DefinedSize = 9;
column.Properties["AutoIncrement"].Value = true;
table.Columns.Append(column, DataTypeEnum.adInteger, 0); //设置主键
table.Keys.Append("PrimaryKey", ADOX.KeyTypeEnum.adKeyPrimary, "ID", "", "");
table.Columns.Append("FileName", DataTypeEnum.adVarWChar, 50);
table.Columns.Append("FileDate", DataTypeEnum.adDate, 0);
table.Columns.Append("FileSize", DataTypeEnum.adInteger, 9);
table.Columns.Append("OrderID", DataTypeEnum.adInteger, 9);
table.Columns.Append("Sha1", DataTypeEnum.adVarWChar, 50);
try
{
catalog.Tables.Append(table);
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
//此处一定要关闭连接,否则添加数据时候会出错
table = null;
catalog = null;
Application.DoEvents();
cn.Close();