Tuesday, November 12, 2013
Bind a DropdownList with Database Values
"In this post I am going to explain you how to bind the drop-down list items with the values present in your database table".
Generally for static pages we add the drop-down list items manually. But what if the application is dynamic. We need to fetch the dropdown list items from the database accordingly.
So here i am going to explain how to bind the drop-down list with database values with a simple example
First create a table with name as Contacts in your database as below:
‘UserId’ should be the primary key and set its column property ‘Identity Specification’ to yes.
The following should be the code in your .aspx page:
And here is the code behind:
That’s all. Your location from the database gets bound to the location dropdown list of your web page. This is how you bind a dropdown list with database values.
Hope it helps you and feel free to post and suggest me with your valuable comments.
Generally for static pages we add the drop-down list items manually. But what if the application is dynamic. We need to fetch the dropdown list items from the database accordingly.
So here i am going to explain how to bind the drop-down list with database values with a simple example
First create a table with name as Contacts in your database as below:
‘UserId’ should be the primary key and set its column property ‘Identity Specification’ to yes.
The following should be the code in your .aspx page:
<html xmlns="http://www.w3.org/1999/xhtml"> <head runat="server"> <title></title> </head> <body> <form id="form1" runat="server"> <div> <b>Selected UserName:</b> <asp:DropDownList ID="ddlCountry" runat="server" /> </div> </form> </body> </html>
Also look in to these posts:
Populating GridView with Textbox values
Value Types and Reference Types in .Net Boxing and UnBoxing in c# with Examples
Populating GridView with Textbox values
Value Types and Reference Types in .Net Boxing and UnBoxing in c# with Examples
And here is the code behind:
protected void BindLocation() { using (SqlConnection cn = new SqlConnection("Data Source=localhost;
Integrated Security=true;Initial Catalog=Your Database Name")) { cn.Open(); SqlCommand cmd = new SqlCommand("Select UserId,Location FROM Contacts",cn); SqlDataAdapter da = new SqlDataAdapter(cmd); DataSet ds = new DataSet(); da.Fill(ds); ddlLocation.DataSource = ds; ddlLocation.DataTextField = "Location"; ddlLocation.DataValueField = "UserId"; ddlLocation.DataBind(); ddlLocation.Items.Insert(0, new ListItem("—Select Location--", "0")); cn.Close(); } }
That’s all. Your location from the database gets bound to the location dropdown list of your web page. This is how you bind a dropdown list with database values.
Hope it helps you and feel free to post and suggest me with your valuable comments.
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