combox设置默认选中值的问题

[snaif_lx]

private void comboBox1_SelectedIndexChanged(object sender, EventArgs e)
{
Connection.Open();//打开数据库连接
string bumenId = this.comboBox1.SelectedValue.ToString();
string UserName='张三' //这个是comboBox2需要设置的默认值
SqlDataAdapter da = new SqlDataAdapter("select username from ERPUser where Department='" + bumenId + "'", conn);
DataSet ds = new DataSet();
da.Fill(ds);
if (comboBox2.GetType().ToString() == "System.Windows.Forms.ComboBox")
{

System.Windows.Forms.ComboBox cmb = (System.Windows.Forms.ComboBox)comboBox2;
cmb.DataSource = ds.Tables[0].DefaultView;
cmb.DisplayMember = "UserName";
cmb.ValueMember = "UserName";

}
conn.Close();
}


部门和用户的一个选择列表，需要设置默认值，值已经取到，例如“张三”
怎么让列表显示的时候就选中“张三”呢？

[於黾]

comboBox1.text="张三"

[wangnaisheng]

 comboBox1.SelectedItem = "张三";

[snaif_lx]

public void Display_Group() { Connection.Open(); SqlDataAdapter da = new SqlDataAdapter("select BuMenName from ERPBuMen", conn); DataSet ds = new DataSet(); da.Fill(ds); if (comboBox1.GetType().ToString() == "System.Windows.Forms.ComboBox") { System.Windows.Forms.ComboBox cmb = (System.Windows.Forms.ComboBox)comboBox1; cmb.DataSource = ds.Tables[0].DefaultView; cmb.DisplayMember = "BuMenName"; cmb.ValueMember = "BuMenName"; cmb.SelectedIndex = cmb.Items.IndexOf("妇科"); } comboBox1.SelectedIndex = comboBox1.Items.IndexOf("妇科"); conn.Close(); } 这样还是不行，默认选中为空，下拉列表是有数据的

[snaif_lx]

也有妇科这个科室

[snaif_lx]

搞定收工！感谢LS