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ASP.net VB load unique items to dropdown list

Hi
In ASP.net 4 I have a dropdownlist control that I want to populate with the unique items of one of the columns in a sQL table that is in my project. What VB code would I use to do this?
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Murray Brown
Asked:
Murray Brown
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1 Solution
 
Pratima PharandeCommented:
Get the data from database , and in query itself get the unique data
see the code below . repleace your query with Sql query

Dim strConnectionString As String = "connetion string here"
    Dim cnn As New SqlConnection(strConnectionString)
    Dim cmd As SqlClient.SqlCommand = New SqlClient.SqlCommand("SELECT distinct col1 FROM tableName ", cnn)
    cmd.CommandType = CommandType.Text
    Dim dacmd As New SqlClient.SqlDataAdapter(cmd)
    Dim dscmd As New DataSet
    dacmd.Fill(dscmd)
    DropDownList11.DataSource = dscmd.Tables(0)
    DropDownList11.DataBind()
0
 
Pratima PharandeCommented:
Get the data from database , and in query itself get the unique data
see the code below . repleace your query with Sql query

Dim strConnectionString As String = "connetion string here"
    Dim cnn As New SqlConnection(strConnectionString)
    Dim cmd As SqlClient.SqlCommand = New SqlClient.SqlCommand("SELECT distinct col1 FROM tableName ", cnn)
    cmd.CommandType = CommandType.Text
    Dim dacmd As New SqlClient.SqlDataAdapter(cmd)
    Dim dscmd As New DataSet
    dacmd.Fill(dscmd)
    DropDownList11.DataSource = dscmd.Tables(0)
DropDownList11.DataTextField = "col1"
DropDownList11.DataValueField = "col1"
    DropDownList11.DataBind()
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Murray BrownMicrosoft Cloud Azure/Excel Solution DeveloperAuthor Commented:
thanks very much
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