如何将对象从组合框所选项目转换为字符串 [英] How can I convert an object from a combobox selected item to a string
本文介绍了如何将对象从组合框所选项目转换为字符串的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
这一切都在 WINDOWS FORM C#,MICROSOFT VISUAL STUDIO 2008 中
This is all in a WINDOWS FORM C#, MICROSOFT VISUAL STUDIO 2008
我有一个以这种方式显示的组合框:
I have a combo box that is being displayed this way:
private void populateCombos()
{
string GetConn1 = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source = c:\\Data\\Db\\Comp.mdb";
string queryString = "SELECT DISTINCT DC FROM Comp";
OleDbDataAdapter dA = new OleDbDataAdapter(queryString, GetConn1);
DataTable dC = new DataTable();
dA.Fill(dC);
comboBoxDC.DataSource = dC;
comboBoxDC.DisplayMember = "DC";
string GetConn2 = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source = c:\\Data\\Db\\Comp.mdb";
string queryString2 = "SELECT DISTINCT PL FROM Comp";
OleDbDataAdapter dA2 = new OleDbDataAdapter(queryString2, GetConn2);
DataTable pL = new DataTable();
dA2.Fill(pL);
comboBoxPL.DataSource = pL;
comboBoxPL.DisplayMember = "PL";
}
我在这里遇到的问题是我无法将所选项目转换为字符串:
I am having issues here being that I cannot make the selected item into a string:
object da = comboBoxDC.SelectedItem;
object pr = comboBoxPL.SelectedItem;
Console.WriteLine(da.ToString());
Console.WriteLine(da);
Console.WriteLine(pr);
//Connection...
var list = new List<dataQuery>();
string GetConnectionString = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source = c:\\Data\\Db\\Comp.mdb";
string connectionString = GetConnectionString;
string queryString = "SELECT DC, PL, CompID, User, Email FROM Comp WHERE DC = \'" + da + "\' AND PL = \'" + pr + "\'";
为了让我查询这些命令,我需要选择的项目 comboBoxDC 是一个字符串,并且与 comboBoxPL 相同.
And in order for me to query these commands I need the selected item comboBoxDC to be a string and same for comboBoxPL.
答案!!!!!!!!!:
ANSWER!!!!!!!:
所以我发现了这一点:
代码:
string da = comboBoxDC.Text.ToString();
string pr = comboBoxPL.Text.ToString();
Console.WriteLine(da)
Console.WriteLine(pr)
text.tostring 输出成功,实际上是字符串.
output is successful with text.tostring and is actually string.
推荐答案
MessageBox.Show(comboBoxDC.SelectedItem.ToString());
在我的 WPF 解决方案上运行良好.
Works fine on my WPF solutions.
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