problem understanding the code ---

Home ›

ASP.NET Forums » General ASP.NET » Data Presentation Controls » problem understanding the code ---

Shortcuts

Previous Next

problem understanding the code ---

Last post 08-23-2008 4:03 AM by anonymouswrites. 3 replies.

Sort Posts:

problem understanding the code ---

08-22-2008, 11:32 AM

Contact

66 point Member
krish3kiran
Member since 06-13-2008, 12:27 PM
Posts 92

I am not able to understand what is happening in this code below. You can see the complete code after this code particularly after populating and binding to the dropdownlist.if (Profile.JobSeeker.ResumeID != -1)

{

ListItem li;

li = ddlCountry.Items.FindByValue(r.CountryID.ToString());

if (li != null)

{

ddlCountry.ClearSelection();

li.Selected = true;

}

li = ddlRelocationCountry.Items.FindByValue(r.RelocationCountryID.ToString());

if (li != null)

{

ddlRelocationCountry.ClearSelection();

li.Selected = true;

}

-----------------------------------------------------------Complete code-------------

private void FillCountries()

{

ddlCountry.DataSource = Country.GetCountries();

ddlCountry.DataTextField = "CountryName";

ddlCountry.DataValueField = "CountryID";

ddlCountry.DataBind();

ddlRelocationCountry.DataSource = Country.GetCountries();

ddlRelocationCountry.DataTextField = "CountryName";

ddlRelocationCountry.DataValueField = "CountryID";

ddlRelocationCountry.DataBind();

if (Profile.JobSeeker.ResumeID != -1)

{

ListItem li;

li = ddlCountry.Items.FindByValue(r.CountryID.ToString());

if (li != null)

{

ddlCountry.ClearSelection();

li.Selected = true;

}

li = ddlRelocationCountry.Items.FindByValue(r.RelocationCountryID.ToString());

if (li != null)

{

ddlRelocationCountry.ClearSelection();

li.Selected = true;

}

Re: problem understanding the code ---

08-22-2008, 12:08 PM

Contact

Answer

2,278 point Contributor
anonymouswrites
Member since 08-13-2008, 12:52 AM
Posts 413

(Profile.JobSeeker.ResumeID != -1) // if resumeID is not null

{

ListItem li;

li = ddlCountry.Items.FindByValue(r.CountryID.ToString()); // find the item in the dropdowm list based on the r.CountryID;

if (li != null) // if the item is found.

{

ddlCountry.ClearSelection(); // remove the selected item from the dropdown

li.Selected = true; // mark the item found as the selected Item in drop down

}

//suppose China was selected country in the dropdown you clear and Italy was the countryId of the item so it will make Italy as selected.

//Same code is for this 2nd condition.

li = ddlRelocationCountry.Items.FindByValue(r.RelocationCountryID.ToString());

if (li != null)

{

ddlRelocationCountry.ClearSelection();

li.Selected = true;

}

hope this helps.

Re: problem understanding the code ---

08-22-2008, 1:01 PM

Contact

66 point Member
krish3kiran
Member since 06-13-2008, 12:27 PM
Posts 92

Thanks but I didn't get u from this statment . what it means ? what is Item here?

Re: problem understanding the code ---

08-23-2008, 4:03 AM

Contact

Answer

2,278 point Contributor
anonymouswrites
Member since 08-13-2008, 12:52 AM
Posts 413

If you bind a dropdown to a list of countries. Each value in the list of countries is rendered as an list item. If you look at the mark up of a drodown it will be

<asp:DropDownList ID="ddlCountries" runat="server">

<ListItem>Country 1</ListItem>

<ListItem>Country 2</ListItem>

<ListItem>Country 3</ListItem>

</asp: DropDownList>

Hope now you got the concept of the item.

Page 1 of 1 (4 items)

RSS Available