Retrieve list items from the textbox text value and display the dropdownlist item for that particular list item

Question

hi,
 I have created a custom list in my sharepoint :
List1 name:   employeedepartment  -
               Title       empdepartment
               A             D1
               B             D2
               C             D3 
List2  name:  employeedetails  
 emptitle            empname       empdepartment(lookup) --> from the list "employeedepartment"
   x                     Ram                 D1
   y                     Robert             D2
   z                     Rahim              D3
My task is to create a custom webpart that will be for searching this employee details by entering emptitle
For this, i have created a visual webpart using visual studio 2010, my webpart will be like this:
emptitle  --->  TextBox1                        Button1--> Text property : Search
empname---> TextBox2
empdepartment-->  DropDownList1
For this, i wrote the code as follows:
protected void Button1_Click(object sender, EventArgs e)
            using (SPSite mysite = new SPSite(SPContext.Current.Site.Url))
                using (SPWeb myweb = mysite.OpenWeb())
                    SPList mylist = myweb.Lists["employeedetails"];
                    SPQuery query = new SPQuery();
                    query.Query = "<Where><Eq><FieldRef Name='Title'/><Value Type='Text'>" + TextBox1.Text.ToString() + "</Value></Eq></Where>";
                    SPListItemCollection myitems = mylist.GetItems(query);
                    if (myitems.Count > 0)
                        foreach (SPListItem item in myitems)
                            string a1 = Convert.ToString(item["empname"]);
                            string a2 = Convert.ToString(item["empdepartment"]);
                            TextBox2.Text = a1;           // displaying   properly                    
                            //DropDownList3.SelectedIndex = 1;                           
 It is showing the list item in textbox according to the item entered in the textbox1... But I am stuck to show in the dropdown list. 
Suppose, if i enter X in textbox and click on search, then dropdownlist need to show D1,
                           for Y --> D2 and for Z-> D3... like that.
What code do i need to write in the button_click to show this... 
Please don't give any links...i just want code in continuation to my code.

Answer 1

Hi,
Since you have got the data you want with the help of SharePoint Object Model, then you can focus on how to populate values and set an option selected in the Drop Down List.
With the retrieved data, you can populate them into the Drop Down List firstly, then set a specific option selected.
Here is a link will show how to populate DropDownList control:
http://www.dotnetfunda.com/articles/show/30/several-ways-to-populate-dropdownlist-controls
Another link about select an item in DropDownList:
http://techbrij.com/select-item-aspdotnet-dropdownlist-programmatically
Best regards
Patrick Liang
TechNet Community Support