private void FormMain_Load(object sender, EventArgs e)
{
List <ConStrInfo> lstConStr = new List <ConStrInfo>();
var dao = new ConStrDao();
DataTable dt = dao.GetList("").Tables[0];
foreach (DataRow dr in dt.Rows)
{
var tempItemp = new ConStrInfo()
{
ID = Convert.ToInt32(dr["ID"]),
ConName = dr["ConName"].ToString(),
ConStrContent = dr["ConStrContent"].ToString()
};
lstConStr.Add(tempItemp);
cbDatabase.Items.Add(tempItemp);
}
cbDatabase.DisplayMember = "ConName";
cbDatabase.ValueMember = "ID";
cbDatabase.SelectedIndex = 0;
DicConStr = lstConStr.ToDictionary(m => m.ID, m => m);
}
/// <summary>
/// 更新一条数据
/// </summary>
public bool Update(ConStrInfo model)
{
StringBuilder strSql = new StringBuilder();
strSql.Append("update ConStr set ");
strSql.Append("ConName=@ConName,");
strSql.Append("ConStrContent=@ConStrContent");
strSql.Append(" where ID=@ID");
OleDbParameter[] parameters =
{
new OleDbParameter("@ConName", OleDbType.VarChar, 255),
new OleDbParameter("@ConStrContent", OleDbType.VarChar, 0),
new OleDbParameter("@ID", OleDbType.Integer, 4)
};
parameters[0].Value = model.ConName;
parameters[1].Value = model.ConStrContent;
parameters[2].Value = model.ID;
int rows = AccessHelper.ExecuteNonQuery(strSql.ToString(), parameters);
if (rows > 0)
{
return(true);
}
else
{
return(false);
}
}
/// <summary>
/// 增加一条数据
/// </summary>
public bool Add(ConStrInfo model)
{
StringBuilder strSql = new StringBuilder();
strSql.Append("insert into ConStr(");
strSql.Append("ConName,ConStrContent)");
strSql.Append(" values (");
strSql.Append("@ConName,@ConStrContent)");
OleDbParameter[] parameters =
{
new OleDbParameter("@ConName", OleDbType.VarChar, 255),
new OleDbParameter("@ConStrContent", OleDbType.VarChar, 0)
};
parameters[0].Value = model.ConName;
parameters[1].Value = model.ConStrContent;
int rows = AccessHelper.ExecuteNonQuery(strSql.ToString(), parameters);
if (rows > 0)
{
return(true);
}
else
{
return(false);
}
}
/// <summary>
/// 得到一个对象实体
/// </summary>
public ConStrInfo DataRowToModel(DataRow row)
{
ConStrInfo model = new ConStrInfo();
if (row != null)
{
if (row["ID"] != null && row["ID"].ToString() != "")
{
model.ID = int.Parse(row["ID"].ToString());
}
if (row["ConName"] != null)
{
model.ConName = row["ConName"].ToString();
}
if (row["ConStrContent"] != null)
{
model.ConStrContent = row["ConStrContent"].ToString();
}
}
return(model);
}
/// <summary>
/// 得到一个对象实体
/// </summary>
public ConStrInfo GetModel(int ID)
{
StringBuilder strSql = new StringBuilder();
strSql.Append("select ID,ConName,ConStrContent from ConStr ");
strSql.Append(" where ID=@ID");
OleDbParameter[] parameters =
{
new OleDbParameter("@ID", OleDbType.Integer, 4)
};
parameters[0].Value = ID;
ConStrInfo model = new ConStrInfo();
DataSet ds = AccessHelper.ExecuteDataSet(strSql.ToString(), parameters);
if (ds.Tables[0].Rows.Count > 0)
{
return(DataRowToModel(ds.Tables[0].Rows[0]));
}
else
{
return(null);
}
}
