在ASP.NET C上使用sql填充DropDownList選擇的文本框＃

Question

我已經爲人員配置文件創建了表。我想我的DropDownList選定的值填充我的2 Textboxes。但是，只有DropDownList有數據庫項目，但是當我選擇一個項目時，2 Textboxes不會填充任何內容。我正在使用ASP.NET C＃和SQL Management Studio。如果有人能幫忙，我會很高興，如果有需要在數據庫中包含查詢，請教我。謝謝！！

這裏是我的頁面加載

protected void Page_Load(object sender, EventArgs e) 
{ 

    if (!Page.IsPostBack) 
    { 
     ddlName1.Items.Add(new ListItem("-Select Officer-", "")); 
     ddlName1.AppendDataBoundItems = true; 
     SqlConnection connName1 = new SqlConnection("Data Source=(...);" + "Initial Catalog=(...); Integrated Security=SSPI"); 
     connName1.Open(); 
     SqlDataAdapter adapName1 = new SqlDataAdapter("SELECT * FROM OfficersProfile", connName1); 
     DataSet dsName1 = new DataSet(); 
     adapName1.Fill(dsName1); 
     ddlName1.DataSource = dsName1; 
     ddlName1.DataTextField = "officer_name"; 
     ddlName1.DataValueField = "officer_id"; 
     ddlName1.DataBind(); 

     connName1.Close(); 
    } 

} 

下面的代碼是我對代碼的SelectedIndexChanged

protected void ddlName1_SelectedIndexChanged(object sender, EventArgs e) 
{ 
    SqlConnection connName1 = new SqlConnection("Data Source=(...);" + "Initial Catalog=(...); Integrated Security=SSPI"); 
    connName1.Open(); 
    SqlCommand cmdName1 = new SqlCommand("SELECT * FROM OfficersProfile where officer_id=@officerID", connName1); 
    cmdName1.Parameters.AddWithValue("@officerID", ddlName1.SelectedValue); 
    SqlDataReader drName1; 
    drName1 = cmdName1.ExecuteReader(); 
    while(drName1.Read()) 
    { 
     txtDivision.Text = drName1[3].ToString(); 
     txtLSOExec.Text = drName1[4].ToString(); 
    } 
    drName1.Close(); 
    connName1.Close(); 
} 

Answer 1

在你的DropDownList