MVC :: Setting First Value In DropDownList?

May 1, 2010

<%= Html.DropDownList("couriers", Model.Couriers, "--Select--")%>

will show a drop down with --Select-- as the first text im the drop down

Now its value rendered is ""

how can i set its value to "0"

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Jan 8, 2010

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Dec 13, 2010

I have a databound dropdownlist on a page, where in the page_load I set the selectedValue (inside a 'not isPostBack').

Although the page displays fine and shows the correct item as selected.. inside the page_load if I try and get the selectedValue() and display it to the screen, I always get null... selectedIndex is -1.

I have a button, which when clicked refers to this ddl's selectedValue, and here it pulls through the the expected result.. so how come I can't see it immediately after setting it, while still in page_load?

edit: the code..

ddl declaration
<asp:DropDownList runat="server" ID="dlCountryList" DataSourceID="dsCountryList"
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May 11, 2010

I have a ASP.Net webform with a DropDownList control. This Dropdown gets it's values from a states table in an ObjectDatasource. The Dropdown contains states spelled out.

If I try to set the drop down to:
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I get an error that the value does not exist in the dropdown even though it does exist. But if I pad the value with the correct number of spaces to the right, it works like so:
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or
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Below is the HTML and Code.
<asp:DropDownList
id="ddlCatogory1st1"
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DataValueField="CategoryID"
AutoPostBack="true"
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End Sub

When I run this page I get

Exception Details: System.NullReferenceException: Object reference not set to an instance of an object.
Source Error:
Line 222:
Line 223: Sub DISPLAY_CATEGORY()
Line 224: ddlCatogory1st1.DataBind()
Line 225: ddlCatogory1st1.Items.FindByValue("A10").Selected = True
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I've been all over the Internet looking for an acceptable solution to this issue, but didn't find one, so hopefully I'll have more luck here. I've got a Html.DropDownList control in my application that pulls in a set of values from the database. That works just fine. However, I want to set the selected value in code, which has never worked correctly. This is, in my opinion, one of the worst implementations of Html helpers in MVC. Here's the culprit:

[Code]....

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[code]...

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[code]...

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I am having two dropdownlist in my project,one dropdownlist for empid, another dropdownlist for month, if the user select the empid, the values are retrieved in the textbox.

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Mar 29, 2011

I have a table and 7 column name.

I bind the 7 column name in one dropdownlist.

Now the problem is,how do I extract the data value in a dropdownlist?

For example,

Dropdownlist contain 7 column name

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-subject_code

-venue

-time

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protected void DropDownList1_SelectedIndexChanged(object sender, EventArgs e)
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adapSel.Fill(dsSel);
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Previously I have bind 7 column name in my dropdownlist
protected void Page_Load(object sender, EventArgs e)
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if (Page.IsPostBack == false)
{
SqlConnection conn = new SqlConnection("Data Source= EN\SQLEXPRESS;" + "Initial Catalog=ms;Integrated Security=SSPI");
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conn.Open();
SqlDataReader ds;
ds = sqlCmd.ExecuteReader();
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dd_list.DataSource = ds;
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dd_list.Items.Insert(0, "Select Option");
ds.Close();
conn.Close();
}
}

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