Question

请问如何根据数据库中的值显示所选的单选按钮？示例：我想显示具有性别价值的员工的详细信息（如果员工在数据库中具有“男性”性别，我希望自动选择单选按钮“男性”）

Answer 1

如果您正在使用WPF，则可以设置表示男性的布尔属性。然后将其绑定到单选按钮检查属性。

这样，如果男性性别属性返回true，则会检查单选按钮。

这是一个很好的例子：

Binding radio button

你也可以使用依赖属性这个概念，但我认为第一种方法肯定会对你有效。

Answer 2

使用BindingSource：

BindingSource myBindingSource = new BindingSource();
bindingSource.DataSource = (your datasource here, could be a DataSet or an object)

var maleBinding = new Binding("Checked", myBindingSource , "Gender");

maleBinding.Format += (s, args) => args.Value = ((string)args.Value) == "Male";
maleBinding.Parse += (s, args) => args.Value = (bool)args.Value ? "Male" : "Female";

maleRadioButton.DataBindings.Add(maleBinding);

var femaleBinding = new Binding("Checked", myBindingSource , "Gender");

femaleBinding.Format += (s, args) => args.Value = ((string)args.Value) == "Female";
femaleBinding.Parse += (s, args) => args.Value = (bool)args.Value ? "Female" : "Male";

femaleRadioButton.DataBindings.Add(femaleBinding);

取自here

Answer 3

它对我来说是成功的，我只是使用datagridview来比较数据库中的值和单选按钮的值。

 GridView grid = new GridView();
    grid.ShowDialog(); 
if (grid.dataGridView1.CurrentRow.Cells[3].Value.ToString()=="Male")
{male_radiobtn.Checked=true;
female_radiobtn.Checked=false;}
else {female_radiobtn.Checked=true;
male_radiobtn.Checked=false;}

Answer 4

我有非常简单的方法将数据库数据显示在此处的表单中..我有学生详细信息数据库，在这个数据库中我创建了信息表。我显示信息表数据。

 {
            // this code is to display data from the database table to application 
            int stdid = Convert.ToInt32(txtId.Text); // convert in to integer to called in sqlcmd
            SqlConnection con = new SqlConnection("Data Source=MILK-THINK\\SQLEXPRESS;Initial Catalog=Student Details;Integrated Security=True");
            con.Open();
            SqlCommand cmd = new SqlCommand("select *from info where Student_id=" + stdid,con); // pass the query with connection 
            SqlDataReader dr; // this will read the data from database
            dr = cmd.ExecuteReader();
            if(dr.Read()==true)
            {
                txtName.Text = dr[1].ToString(); // dr[1] is a colum name which goes in textbox
                cmbCountry.SelectedItem = dr[2].ToString(); // combobox selecteditem will be display
               // for radio button we have to follow this method which in nested if statment
                if(dr[3].ToString()=="Male") 
                {
                    rdbMale.Checked=true;


                }
                else if (dr[3].ToString() == "Female")
                {
                    rdbFemale.Checked = true;
                }
                else
                {
                    MessageBox.Show("There are no records");
                    dr.Close();
                }
            }
            con.Close();
        }

显示数据库中的选定单选按钮c＃

4 个答案: