ComboBox文本选择 [英] ComboBox Text Selection

问题描述

Im添加一些项目给Combobox赞

Hi,


Im Add Some Items To Combobox Like

Combobox cbox = new ComboBox();
cbox.Items.Add("A");
cbox.Items.Add("B");
cbox.Items.Add("C");
cbox.Items.Add("D");
cbox.Items.Add("E");

Assiging

Assiging

cbox.Text = Value From Database (Value May Be "A",or "B" or "C" or "D");

但在Combobox中文本显示我看不到值？

But In Combobox Text Display I Cannot See The Value?

推荐答案

请参阅：

http://msdn.microsoft.com/en-us/library/system.windows.controls.primitives.selector.selectedindex。 aspx [ ^ ]，

http://msdn.microsoft.com/en-us/library/system.windows.controls.primitives.selector.selecteditem.aspx [ ^ ]，

http://msdn.microsoft.com/ en-us / library / system.windows.controls.primitives.selector.selectedvalue.aspx [ ^ ]。

-SA

Please see:
http://msdn.microsoft.com/en-us/library/system.windows.controls.primitives.selector.selectedindex.aspx[^],
http://msdn.microsoft.com/en-us/library/system.windows.controls.primitives.selector.selecteditem.aspx[^],
http://msdn.microsoft.com/en-us/library/system.windows.controls.primitives.selector.selectedvalue.aspx[^].

—SA

使用此代码将Combobox与数据库记录绑定

Use this Code For binding Combobox with database records

public void bindd()
       {
           string str = "Select name,payment_id From payment";
           SqlCommand com = new SqlCommand(str, sconn);
           SqlDataAdapter sqlda = new SqlDataAdapter(com);
           DataSet ds = new DataSet();
           sqlda.Fill(ds, "payment");
           combopaymenttype.DataSource = ds.Tables["payment"].DefaultView;
           combopaymenttype.DisplayMember = "name";
           combopaymenttype.ValueMember = "payment_id";
       }

嗨。在WPF中你必须首先将Control.Property绑定到DataBase。

在这里你必须：

Combobox.ItemsSource =来自Db;

in xaml ：

< combobox itemssource ={Biding}displaymemberpath ={Biding yourFieldInDB}>

祝你好运

Hi. in WPF you must first Bind Control.Property to DataBase.
in here you must :
Combobox.ItemsSource=From Db;
in xaml:
<combobox itemssource="{Biding}" displaymemberpath="{Biding yourFieldInDB}">
good luck

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