I Am Trying To Get Address On Select Of Emp Name From Dropdownlist But I Am Not Getting

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hello i am having a dropdown list and i am trying to get the address on selection of empname ..help meplease i am new to programming

Posted 28-Feb-14 7:01am

vivek0041

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george4986 28-Feb-14 23:45pm

are u getting value on dropdown selected index change?
if yes, use the value to filter ur dt using rowfilter or linq. then show the address to the required field

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Thomas Nielsen - getCore · Answer 1 · 2014-02-28T07:04:00

Poste the code?
Set the dropdown to autopostback and add event to onselectedindexchanged and use the selected index to dig out the value, that's the most reliable approach

for example:
Web page

XML

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title>Dropdown dynamics sample</title>
</head>
<body>
    <form id="DemoForm" runat="server">
    <div>
        <asp:DropDownList id="CustomerSelect" runat="server" AutoPostBack="true"
            onselectedindexchanged="CustomerSelect_SelectedIndexChanged">
            <asp:ListItem Value="0">Please select</asp:ListItem>
        </asp:DropDownList>
         <label id="CustomerActive" runat="server"></label>
    </div>
    </form>
</body>
</html>

and code behind

C#

public partial class DropDownSample : System.Web.UI.Page
    {
        protected struct CustomerData
        {
            public int CustomerID;
            public string Name;
            public string StreetAndNumber;
        }

        private Dictionary<int, CustomerData> _dictionary = new Dictionary<int, CustomerData>();

        protected void Page_Init(object sender, EventArgs e){
            _dictionary.Add(1, new CustomerData { CustomerID = 1, Name = "Bill Spectre", StreetAndNumber = "Looneystreet 1" });
            _dictionary.Add(2, new CustomerData { CustomerID = 2, Name = "Charlie P", StreetAndNumber = "Yazzlane 2" });
            _dictionary.Add(3, new CustomerData { CustomerID = 3, Name = "Dick Di Spenser", StreetAndNumber = "Whatyerroad 3" });
        }

        protected void Page_Load(object sender, EventArgs e)
        {
            if (!IsPostBack)
            {
                //CustomerSelect.Items.Add(new ListItem("Please select", "0"));
                foreach (var customer in _dictionary)
                {
                    CustomerSelect.Items.Add(new ListItem(customer.Value.Name, customer.Value.CustomerID.ToString()));
                }
            }
        }

        protected void CustomerSelect_SelectedIndexChanged(object sender, EventArgs e)
        {
            int idx = CustomerSelect.SelectedIndex;
            if (idx == 0)
            {
                CustomerActive.InnerText = "Please select from dropdown, one of the names";
                return;
            }
            var cust = _dictionary[idx];
            CustomerActive.InnerText = cust.StreetAndNumber;
        }
    }

Krunal Rohit · Answer 2 · 2014-03-01T02:51:00

This would load Employee Names in the dropdown list.

C#

empDropDownList.DataSource = empDt;      //empDt is a DataTable that contains all the data of Employee, 
empDropDownList.DataValueField = "EmpID";      // your unique key
empDropDownList.DataTextField = "EmpName";
empDropDownList.DataBInd();

now write the query following way to get the data of the employee based on the name,

C#

string query  = "SELECT * FROM Employee WHERE EmpID=" + int.parse(empDropDownList.SelectedValue);
SqlDataAdapter da = new SqlAdapter(query, connnectionObject);
DataTable dt = new DataTable();
da.Fill(dt);
addressLbl.Text = dt.Rows[0]["Address"].ToString();

-KR

I Am Trying To Get Address On Select Of Emp Name From Dropdownlist But I Am Not Getting

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