C# 使用Ms access 2013中的OleDbDataReader数据绑定DropDownList_C#_Asp.net_Ms Access_Ms Access 2013

C# 使用Ms access 2013中的OleDbDataReader数据绑定DropDownList

c# asp.net ms-access

C# 使用Ms access 2013中的OleDbDataReader数据绑定DropDownList,c#,asp.net,ms-access,ms-access-2013,C#,Asp.net,Ms Access,Ms Access 2013,我正在尝试将我的下拉列表与我的数据库MS Access 2013（accdb文件）进行数据绑定。这是我的代码 protected void Page_Load(object sender, EventArgs e) { string str = "Provider=Microsoft.ACE.OleDB.12.0; Data Source=C:\\Users\\Dima\\Documents\\Visual Studio 2013\\Projects\\networkl

我正在尝试将我的下拉列表与我的数据库MS Access 2013（accdb文件）进行数据绑定。这是我的代码

 protected void Page_Load(object sender, EventArgs e)
    {
        string str = "Provider=Microsoft.ACE.OleDB.12.0; Data Source=C:\\Users\\Dima\\Documents\\Visual Studio 2013\\Projects\\networklab1\\bin\\weblabdb.accdb";
        OleDbConnection db = new OleDbConnection(str);
        db.Open();
        string st = "select areaName from area;";
        OleDbCommand dbc = new OleDbCommand(st, db);
        OleDbDataReader read = dbc.ExecuteReader();

        DropDownList1.DataSource = read;

        DropDownList1.DataBind();
        read.Close();
        db.Close();
    }

我得到的是一行“System.Data.Common.DataRecordInternal” 我的错误是什么，如何解决！！！

谢谢

您没有检查

回发

以及您的

数据文本字段

和

数据值字段

protected void Page_Load(object sender, EventArgs e)
    {

if(!Page.IsPostBack)
{

string str = "Provider=Microsoft.ACE.OleDB.12.0; Data Source=C:\\Users\\Dima\\Documents\\Visual Studio 2013\\Projects\\networklab1\\bin\\weblabdb.accdb";
        OleDbConnection db = new OleDbConnection(str);
        db.Open();
        string st = "select areaName from area;";
        OleDbCommand dbc = new OleDbCommand(st, db);
        OleDbDataReader read = dbc.ExecuteReader();

        DropDownList1.DataSource = read;
        DropDownList1.DataTextField="areaName";       //missing this
        DropDownList1.DataValueField="areaName";        //missing this
        DropDownList1.DataBind();
        read.Close();
        db.Close();

}

    }

您缺少检查

Postback

以及缺少

DataTextField

和

DataValueField

protected void Page_Load(object sender, EventArgs e)
    {

if(!Page.IsPostBack)
{

string str = "Provider=Microsoft.ACE.OleDB.12.0; Data Source=C:\\Users\\Dima\\Documents\\Visual Studio 2013\\Projects\\networklab1\\bin\\weblabdb.accdb";
        OleDbConnection db = new OleDbConnection(str);
        db.Open();
        string st = "select areaName from area;";
        OleDbCommand dbc = new OleDbCommand(st, db);
        OleDbDataReader read = dbc.ExecuteReader();

        DropDownList1.DataSource = read;
        DropDownList1.DataTextField="areaName";       //missing this
        DropDownList1.DataValueField="areaName";        //missing this
        DropDownList1.DataBind();
        read.Close();
        db.Close();

}

    }

您缺少检查

Postback

以及缺少

DataTextField

和

DataValueField

protected void Page_Load(object sender, EventArgs e)
    {

if(!Page.IsPostBack)
{

string str = "Provider=Microsoft.ACE.OleDB.12.0; Data Source=C:\\Users\\Dima\\Documents\\Visual Studio 2013\\Projects\\networklab1\\bin\\weblabdb.accdb";
        OleDbConnection db = new OleDbConnection(str);
        db.Open();
        string st = "select areaName from area;";
        OleDbCommand dbc = new OleDbCommand(st, db);
        OleDbDataReader read = dbc.ExecuteReader();

        DropDownList1.DataSource = read;
        DropDownList1.DataTextField="areaName";       //missing this
        DropDownList1.DataValueField="areaName";        //missing this
        DropDownList1.DataBind();
        read.Close();
        db.Close();

}

    }

您缺少检查

Postback

以及缺少

DataTextField

和

DataValueField

protected void Page_Load(object sender, EventArgs e)
    {

if(!Page.IsPostBack)
{

string str = "Provider=Microsoft.ACE.OleDB.12.0; Data Source=C:\\Users\\Dima\\Documents\\Visual Studio 2013\\Projects\\networklab1\\bin\\weblabdb.accdb";
        OleDbConnection db = new OleDbConnection(str);
        db.Open();
        string st = "select areaName from area;";
        OleDbCommand dbc = new OleDbCommand(st, db);
        OleDbDataReader read = dbc.ExecuteReader();

        DropDownList1.DataSource = read;
        DropDownList1.DataTextField="areaName";       //missing this
        DropDownList1.DataValueField="areaName";        //missing this
        DropDownList1.DataBind();
        read.Close();
        db.Close();

}

    }

缺少DataTextField和DataValueField。请尝试此操作-

    protected void Page_Load(object sender, EventArgs e)
    {
string str = "Provider=Microsoft.ACE.OleDB.12.0; Data Source=C:\\Users\\Dima\\Documents\\Visual Studio 2013\\Projects\\networklab1\\bin\\weblabdb.accdb";
        OleDbConnection db = new OleDbConnection(str);
        db.Open();
        string st = "select areaName from area;";
        OleDbCommand dbc = new OleDbCommand(st, db);
        OleDbDataReader read = dbc.ExecuteReader();

        DropDownList1.DataSource = read;
        DropDownList1.DataTextField="ShownTextFieldFromDatabaseResults";;       
        DropDownList1.DataValueField="ValueFieldFromDatabaseResults";        
        DropDownList1.DataBind();
        read.Close();
        db.Close();

    }

缺少DataTextField和DataValueField。请尝试此操作-

    protected void Page_Load(object sender, EventArgs e)
    {
string str = "Provider=Microsoft.ACE.OleDB.12.0; Data Source=C:\\Users\\Dima\\Documents\\Visual Studio 2013\\Projects\\networklab1\\bin\\weblabdb.accdb";
        OleDbConnection db = new OleDbConnection(str);
        db.Open();
        string st = "select areaName from area;";
        OleDbCommand dbc = new OleDbCommand(st, db);
        OleDbDataReader read = dbc.ExecuteReader();

        DropDownList1.DataSource = read;
        DropDownList1.DataTextField="ShownTextFieldFromDatabaseResults";;       
        DropDownList1.DataValueField="ValueFieldFromDatabaseResults";        
        DropDownList1.DataBind();
        read.Close();
        db.Close();

    }

缺少DataTextField和DataValueField。请尝试此操作-

    protected void Page_Load(object sender, EventArgs e)
    {
string str = "Provider=Microsoft.ACE.OleDB.12.0; Data Source=C:\\Users\\Dima\\Documents\\Visual Studio 2013\\Projects\\networklab1\\bin\\weblabdb.accdb";
        OleDbConnection db = new OleDbConnection(str);
        db.Open();
        string st = "select areaName from area;";
        OleDbCommand dbc = new OleDbCommand(st, db);
        OleDbDataReader read = dbc.ExecuteReader();

        DropDownList1.DataSource = read;
        DropDownList1.DataTextField="ShownTextFieldFromDatabaseResults";;       
        DropDownList1.DataValueField="ValueFieldFromDatabaseResults";        
        DropDownList1.DataBind();
        read.Close();
        db.Close();

    }

缺少DataTextField和DataValueField。请尝试此操作-

    protected void Page_Load(object sender, EventArgs e)
    {
string str = "Provider=Microsoft.ACE.OleDB.12.0; Data Source=C:\\Users\\Dima\\Documents\\Visual Studio 2013\\Projects\\networklab1\\bin\\weblabdb.accdb";
        OleDbConnection db = new OleDbConnection(str);
        db.Open();
        string st = "select areaName from area;";
        OleDbCommand dbc = new OleDbCommand(st, db);
        OleDbDataReader read = dbc.ExecuteReader();

        DropDownList1.DataSource = read;
        DropDownList1.DataTextField="ShownTextFieldFromDatabaseResults";;       
        DropDownList1.DataValueField="ValueFieldFromDatabaseResults";        
        DropDownList1.DataBind();
        read.Close();
        db.Close();

    }

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