我有一个连接到MS Access数据库的winform应用程序。在我的客户端页面上，在我的情况下是Wendy的餐厅，我可以选择餐厅所处的状态，墙壁或屋顶结构是什么，等等。当最终用户在此页面上时，我想要能够从这些各种组合框中进行选择，以选择我的MS数据库文件中的选项，以便添加新记录或更新现有记录。我查看了stackoverflow上的其他帖子，其中作者为一个组合框创建了一个方法＆amp;从程序的form_load部分调用它，但我试图将多个组合框填充到我的数据库。我已经在网络上看到了其他人将组合框绑定到数据集的事情。现在我有我的程序的WendysForm_Load部分中定义的一个组合框。为每个组合框创建一个方法更好吗？从我的Form_load部分调用它，还是将所有组合框绑定到我的数据集更好？这是我的代码＆amp;我还附上了一张图片：
private void WendysForm_Load(object sender, EventArgs e)//Start of WendysForm_Load code
{
// TODO: This line of code loads data into the 'cDG_Project_TypesDataSet.Wendys' table. You can move, or remove it, as needed.
this.wendysTableAdapter.Fill(this.cDG_Project_TypesDataSet.Wendys);
try
{
connection.Open();//Open Connection
OleDbCommand command = new OleDbCommand();//Create command object of OleDbCommand
command.Connection = connection;//This tells OleDbCommand command object to use OleDbConnection connection variable to connect to Access Database
string query = "SELECT DISTINCT State FROM Wendys";//SQL Statement for Combo Boxes(Still need to figure out how to do multiple Combo Boxes!!!!!!)
//string query = "SELECT DISTINCT [" + sqlColumnName.ToString() + "] FROM [database].[dbo].[Wendys];";
//"SELECT DISTINCT AssetType FROM Wendys";
//"SELECT DISTINCT BaseModel FROM Wendys";
//"SELECT DISTINCT BldgPrototypeYear FROM Wendys";
//"SELECT DISTINCT UpgradeClass FROM Wendys";
//"SELECT DISTINCT ExtWallStructure FROM Wendys";
//"SELECT DISTINCT NewWallStructure FROM Wendys";
//"SELECT DISTINCT ExtRoofStructure FROM Wendys";
//"SELECT DISTINCT NewRoofStructure FROM Wendys";
//"SELECT DISTINCT ExstFoundationType FROM Wendys";
//"SELECT DISTINCT NewFoundationType FROM Wendys";
//"SELECT DISTINCT Addition FROM Wendys";
//"SELECT DISTINCT BladeDesign FROM Wendys";
//"SELECT DISTINCT DriveThruType FROM Wendys";
//"SELECT DISTINCT Patio FROM Wendys";
//"SELECT DISTINCT TrashEnclosure FROM Wendys";
//"SELECT DISTINCT CounterStyle FROM Wendys";
//"SELECT DISTINCT SelfServe FROM Wendys";
//"SELECT DISTINCT DigitalStatic FROM Wendys";
//"SELECT DISTINCT RaisedCeiling,Notes FROM Wendys";
//"SELECT DISTINCT Notes FROM Wendys";
command.CommandText = query;//This asigns string variable query to command.CommandText object
OleDbDataReader reader = command.ExecuteReader();//This executes Query
while (reader.Read())
{
//Populate Combo Boxes with Access Database fields(Still need to figure out how to do multiple Combo Boxes!!!!!!)
cb_State.Items.Add(reader["State"].ToString());
// cb_AssetType.Items.Add(reader["AssetType"].ToString());
// cb_BaseModel.Items.Add(reader["BaseModel"].ToString());
// cb_BldgPrototypeYear.Items.Add(reader["BldgPrototypeYear"].ToString());
// cb_UpgradeClass.Items.Add(reader["UpgradeClass"].ToString());
// cb_ExtWallStructure.Items.Add(reader["ExtWallStructure"].ToString());
// cb_NewWallStructure.Items.Add(reader["NewWallStructure"].ToString());
// cb_ExtRoofStructure.Items.Add(reader["ExtRoofStructure"].ToString());
// cb_NewRoofStructure.Items.Add(reader["NewRoofStructure"].ToString());
// cb_ExtFndType.Items.Add(reader["ExstFoundationType"].ToString());
// cb_NewFndType.Items.Add(reader["NewFoundationType"].ToString());
// cb_Addition.Items.Add(reader["Addition"].ToString());
// cb_BladeDesign.Items.Add(reader["BladeDesign"].ToString());
// cb_DriveThruType.Items.Add(reader["DriveThruType"].ToString());
// cb_Patio.Items.Add(reader["Patio"].ToString());
// cb_TrashEnclosure.Items.Add(reader["TrashEnclosure"].ToString());
// cb_CounterStyle.Items.Add(reader["CounterStyle"].ToString());
// cb_SelfServe.Items.Add(reader["SelfServe"].ToString());
// cb_MenuboardType.Items.Add(reader["DigitalStatic"].ToString());
// cb_RaisedCeiling.Items.Add(reader["RaisedCeiling"].ToString());
// list_Notes.Items.Add(reader["Notes"].ToString());
}
connection.Close();//Close Connection
}//End of try for WendysForm_Load
catch (Exception ex)
{
MessageBox.Show("Error " + ex);
}//end of catch for WendysForm_Load
}//End of code for WendysForm_Load
