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create sqldatasource through coding

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johnny.g

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create sqldatasource through coding

Jun 25th, 2008

hi all i m using asp.net 2005 and sql server 2005...i have a dropdown list in my page...i have a table called as details...all i want to do is bind the fname from details table to dropdownlistbox...but the thing is tht i want to each and every step through coding...is it possible to do so....pls let me know how to do it,,,,,,,frm whr do i strt ...
thnks in advance

Johnny.G

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Re: create sqldatasource through coding

Jun 25th, 2008

 Help with Code Tags 
 ASP.NET Syntax (Toggle Plain Text) 
 protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            SqlDataSource mySource = new SqlDataSource("Data Source=SERKAN\\MYSQLSERVER2005;Initial Catalog=deneme;Integrated Security=True;Pooling=False", "select * from names");
            myDropDown.DataSource = mySource.Select(DataSourceSelectArguments.Empty);
            myDropDown.DataValueField = "PKID";
            myDropDown.DataTextField = "name";
            myDropDown.DataBind();
        }
    }
 protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            SqlDataSource mySource = new SqlDataSource("Data Source=SERKAN\\MYSQLSERVER2005;Initial Catalog=deneme;Integrated Security=True;Pooling=False", "select * from names");
            myDropDown.DataSource = mySource.Select(DataSourceSelectArguments.Empty);
            myDropDown.DataValueField = "PKID";
            myDropDown.DataTextField = "name";
            myDropDown.DataBind();
        }
    }

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Re: create sqldatasource through coding

Jun 26th, 2008

•

Originally Posted by serkansendur

Help with Code Tags

ASP.NET Syntax (Toggle Plain Text)
 protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            SqlDataSource mySource = new SqlDataSource("Data Source=SERKAN\\MYSQLSERVER2005;Initial Catalog=deneme;Integrated Security=True;Pooling=False", "select * from names");
            myDropDown.DataSource = mySource.Select(DataSourceSelectArguments.Empty);
            myDropDown.DataValueField = "PKID";
            myDropDown.DataTextField = "name";
            myDropDown.DataBind();
        }
    }
protected void Page_Load(object sender, EventArgs e) { if (!IsPostBack) { SqlDataSource mySource = new SqlDataSource("Data Source=SERKAN\\MYSQLSERVER2005;Initial Catalog=deneme;Integrated Security=True;Pooling=False", "select * from names"); myDropDown.DataSource = mySource.Select(DataSourceSelectArguments.Empty); myDropDown.DataValueField = "PKID"; myDropDown.DataTextField = "name"; myDropDown.DataBind(); } }

coool mann,,,,thts working fine,,,,,well i m using a connection string called as connectionstring2,,,,,,,,,,how can i use this connection string instead of writing the whole connection on pageload ,,,thnks for ur help,,

Johnny.G

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Re: create sqldatasource through coding

Jun 26th, 2008

guys how can i use the same code without using sql datasource,,,i came to know tht we can use sql data reader and sql command and other such things,,,,is it possible,,,,let me know,,
thnks in advance

Johnny.G

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bala24

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Re: create sqldatasource through coding

Jun 26th, 2008

Yes you can. Follow these steps.

1).Create a query which fetches the fname from details table.
2).Call cmd.ExecuteReader with this query.
3).Now bind the dropdownlist from the datareade.

For this step you can use the following code.

•

<dropdownlist>.DataSource = <datareader>
<dropdownlist>.DataBind()

Michelangelo

"The best place to find a helping hand is at the end of your own arm"

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Re: create sqldatasource through coding

Jun 26th, 2008

•

Originally Posted by bala24

Yes you can. Follow these steps.

1).Create a query which fetches the fname from details table.
2).Call cmd.ExecuteReader with this query.
3).Now bind the dropdownlist from the datareade.

For this step you can use the following code.

hi bala,,,well i m not able to do it,,,,
here is my code

If Not Page.IsPostBack Then
Dim conn As SqlConnection
Dim cmd As SqlCommand
Dim dr As SqlDataReader
Dim str1 As String
Dim strcon As String

str1 = "select * from details"
strcon = "Data Source=PC-1;Initial Catalog=jay;user id=;pwd=;Trusted_Connection=yes"
conn = New SqlConnection(strcon)
conn.Open()
cmd = New SqlCommand(str1, conn)

dr = cmd.ExecuteReader()
DropDownList1.DataSource = dr
DropDownList1.DataValueField = "srno"
DropDownList1.DataTextField = "fname"
DropDownList1.DataBind()
______________________________________
it gives an error...any suggestions,,i have written ths code on page load,,,reply asap

Johnny.G

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bala24

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Re: create sqldatasource through coding

Jun 26th, 2008

Well, your sql query is fetching all columns from the table and your dropdownlist cannot be bound to such a recordset.
What you need to do is modify your sql query to fetch only fname as in

select fname from details

Michelangelo

"The best place to find a helping hand is at the end of your own arm"

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johnny.g

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Re: create sqldatasource through coding

Jun 26th, 2008

•

Originally Posted by bala24

Well, your sql query is fetching all columns from the table and your dropdownlist cannot be bound to such a recordset.
What you need to do is modify your sql query to fetch only fname as in

select fname from details

no its not workin bala,,,,well i have tried another code,,here it is

 Help with Code Tags 
 ASP.NET Syntax (Toggle Plain Text) 
 dbconn.Open()
        If Not Page.IsPostBack Then
            dbadap = New SqlDataAdapter("select fname from details", dbconn)
            dbadap.Fill(ds, "details")
            DropDownList1.DataSource = ds.Tables("details").DefaultView
            DropDownList1.DataBind()
            DropDownList1.SelectedValue = ""
            MsgBox(DropDownList1.SelectedValue)
            DropDownList1.DataValueField = "srno"
            DropDownList1.DataTextField = "fname"
        End If
 dbconn.Open()
        If Not Page.IsPostBack Then
            dbadap = New SqlDataAdapter("select fname from details", dbconn)
            dbadap.Fill(ds, "details")
            DropDownList1.DataSource = ds.Tables("details").DefaultView
            DropDownList1.DataBind()
            DropDownList1.SelectedValue = ""
            MsgBox(DropDownList1.SelectedValue)
            DropDownList1.DataValueField = "srno"
            DropDownList1.DataTextField = "fname"
        End If

well in this code,,the dropdown list gets filled with system.data.datarowview

i want tht to fill with fname...reply asap

Johnny.G

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bala24

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Re: create sqldatasource through coding

Jun 26th, 2008

Try this.

http://bytes.com/forum/thread259618.html

Michelangelo

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johnny.g

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Re: create sqldatasource through coding

#10

Jun 26th, 2008

•

Originally Posted by bala24

Try this.

http://bytes.com/forum/thread259618.html

thnks dude ,,,will go thr tht link n let u know if it wrks for me,,,,
by the way i found a the code tht i wanted finally,,,here it is ,its very simple using only sql data reader,,,here it is

 Help with Code Tags 
 ASP.NET Syntax (Toggle Plain Text) 
Dim conn = New SqlConnection("Data Source=(local);Initial Catalog=(databasename);user id=;pwd=;Trusted_Connection=yes")
        conn.open()
        Dim dr As SqlDataReader
        Dim cmd = New SqlCommand("select * from details", conn)
        dr = cmd.ExecuteReader()
        DropDownList1.DataSource = dr
        DropDownList1.DataTextField = "fname"
        DropDownList1.DataValueField = "srno"
        DropDownList1.DataBind()
Dim conn = New SqlConnection("Data Source=(local);Initial Catalog=(databasename);user id=;pwd=;Trusted_Connection=yes")
        conn.open()
        Dim dr As SqlDataReader
        Dim cmd = New SqlCommand("select * from details", conn)
        dr = cmd.ExecuteReader()
        DropDownList1.DataSource = dr
        DropDownList1.DataTextField = "fname"
        DropDownList1.DataValueField = "srno"
        DropDownList1.DataBind()

well this works for me,,thnks for all ur help