1
在對數據進行更多的讀取和研究之後，我已經基於MSDN站點重新編寫了一個數據集的代碼;然而，我正陷入困境。我相信我已經在類級別中聲明瞭該數據集;然而，每當我試圖把該數據集與數據表未找到錯誤
DataRow[] drRow = tblEmployee.Select("EmployeeKey = " + TextBox12.Text)
我收到錯誤：
- 「tblEmployees」並不在當前的背景下
- 名稱「TextBox12存在名稱'不存在在當前的情況下
我想能夠decl它是在班級，所以我可以從表格中的任何地方打電話給它。
我已經通讀了MSDN網站上的課程級別，說實話，我認爲這只是讓我更加困惑。
基本上就是我想要發生的是數據集按照字母順序按名字提供員工列表，然後當用戶從下拉框中選擇員工時，應選擇員工ID並將其顯示在textBox12中，然後執行tblEmplpoyees的搜索以查找其餘數據以顯示給員工，例如代碼中的//註釋中定義的字段。
有人可以幫助我這個，這裏是我的代碼大氣壓：
namespace Tempus.Menus
{
public partial class Employees : Form
{
public class myData
{
DataSet[]drRow = tblEmployees.Select("EmployeeKey = " + TextBox12.Text);;
}
public Employees()
{
InitializeComponent();
//Connect to database for Employees Table Headers
SqlConnection myConnection = new SqlConnection(@"Server=server\CHCTEMPUS;Integrated Security=true;" +
"user id=userID;password=password;" +
"Trusted_Connection=yes;" +
"Database=Database;" +
"connection timeout=30");
SqlDataAdapter daEmployees
= new SqlDataAdapter("Select *, Lname +', '+ Fname as LastFirst, Fname +' '+ Lname as FirstLast FROM Employees WHERE Lname IS NOT NULL AND Fname IS NOT NULL", myConnection);
DataSet dsEmployees = new DataSet("Employees");
daEmployees.FillSchema(dsEmployees, SchemaType.Source, "Employees");
daEmployees.Fill(dsEmployees, "Employees");
DataTable tblEmployees;
tblEmployees = dsEmployees.Tables["Employees"];
comboBox1.DisplayMember = "FirstLast";
comboBox1.ValueMember = "employeeNumber";
comboBox1.DataSource = tblEmployees;
try
{ }
catch (Exception e)
{
MessageBox.Show(e.ToString());
}
finally
{
if (myConnection != null)
{
myConnection.Dispose();
}
}
comboBox1.SelectedIndexChanged += comboBox1_SelectedIndexChanged;
comboBox2.SelectedIndexChanged += comboBox2_SelectedIndexChanged;
}
private void comboBox1_SelectedIndexChanged(object sender, EventArgs e)
{
if (comboBox1.SelectedIndex != -1)
{
textBox1.Text = string.Empty;
}
{
textBox12.Text = comboBox1.SelectedValue.ToString();
}
}
private void comboBox2_SelectedIndexChanged(object sender, EventArgs e)
{
if (comboBox2.SelectedIndex == -1)
{
textBox1.Text = string.Empty;
}
else
{
textBox1.Text = comboBox2.SelectedItem.ToString();
}
}
private void Employees_Load(object sender, EventArgs e)
{
}
private void label1_Click(object sender, EventArgs e)
{
}
private void textBox1_TextChanged_1(object sender, EventArgs e)
{
//Last Name
}
private void textBox2_TextChanged(object sender, EventArgs e)
{
//First Name
}
private void textBox3_TextChanged(object sender, EventArgs e)
{
//Middle Name
}
private void textBox4_TextChanged(object sender, EventArgs e)
{
//Hire Date
}
private void textBox5_TextChanged(object sender, EventArgs e)
{
//Term Date
}
private void textBox6_TextChanged(object sender, EventArgs e)
{
//Company
}
private void textBox7_TextChanged(object sender, EventArgs e)
{
//Notes
}
private void textBox8_TextChanged(object sender, EventArgs e)
{
//PTO
}
private void textBox9_TextChanged(object sender, EventArgs e)
{
//SNP
}
private void textBox10_TextChanged(object sender, EventArgs e)
{
//Credentials
}
private void textBox11_TextChanged(object sender, EventArgs e)
{
//Employee Full Name (First Last)
}
private void textBox12_TextChanged(object sender, EventArgs e)
{
//Employee ID
}
private void textBox13_TextChanged(object sender, EventArgs e)
{
//Branch
}
private void checkBox1_CheckedChanged(object sender, EventArgs e)
{
if (checkBox1.Checked)
{
// logic here for if the box has now been checked
}
else
{
// what to do if the box has been unchecked
}
}
private void button1_Click(object sender, EventArgs e)
{
Main myNewForm = new Main();
myNewForm.Show();
this.Close();
}
private void button2_Click(object sender, EventArgs e)
{
Reports myNewForm = new Reports();
myNewForm.Show();
this.Close();
}
}
}
你能粘貼代碼嗎？ – 2012-07-24 21:00:17
對不起，我以爲我已經從Namespace中選擇了全部。我很抱歉。 – 2012-07-24 21:09:32
向我們展示了更多的代碼，尤其是調用和引發錯誤的上下文 – Les 2012-07-24 21:10:11