how to add new iteam in dropdown using query

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SqlCommand cmd = new SqlCommand("select * from user_login where groupid=1", cnn);
            SqlDataAdapter da = new SqlDataAdapter(cmd);
            DataSet ds = new DataSet();
            da.Fill(ds);
            ddlstudentname.DataSource=ds;
            ddlstudentname.DataTextField="name";
            ddlstudentname.DataVlaueField="name";
            ddlstudentname.DataBind();

I am fill dropdown using this way ,but i have to add one more thing that is not in dataset of my query.
so what is syntex of it ?

Posted 11-Jan-13 2:32am

Member 9511889

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Comments

marcio_krul 11-Jan-13 8:49am

the sintax is:

youdropdown.insert(position,youItem);

Exemple:

dropdown1.Insert(0,new ListItem("value","Text")); insert data in a first position;
dropdown1.Add(new ListItem("value","Text")); insert into a last position;

4 solutions

Solution 1

Hi,

C#

ds.Tables[0].Rows.Add(new object[] { "Your Element" });

If you want it as first then

C#

ds.Tables[0].Rows.InsertAt(new DataRow() { ItemArray=new object[] { "Your Element" }},0);

Posted 11-Jan-13 2:45am

Suvabrata Roy

Comments

Member 9511889 11-Jan-13 8:50am

this element ( for Ex:'Please select' i have to put it as first) is going in dropdown or nor. If going then i have to not consider it as data (for Ex: if i select 'please select' from dropdown then it will ask for select any data from dropdown to user.)

Suvabrata Roy 11-Jan-13 8:53am

ds.Tables[0].Rows.InsertAt(new DataRow() { ItemArray=new object[] { "Please Select" }},0);

Solution 3

After the DataBind()you can do one of the following:

C

ddlstudentname.Items.Add("Foo"); //Adds to the end of the list, Text set to Foo, no value
ddlstudentname.Items.Add(new ListItem("Foo")); //Adds to the end of the list, Text set to Foo, no value ( same as above)
ddlstudentname.Items.Add(new ListItem("Foo","Bar")); //Adds to the end of the list, Text set to Foo, Value set to Bar

ddlstudentname.Items.Insert(0, "Foo"); //Adds to the start of the list (index 0), Text set to Foo, no value
ddlstudentname.Items.Insert(0, new ListItem("Foo")); //Adds to the start of the list (index 0), Text set to Foo, no value ( same as above)
ddlstudentname.Items.Insert(0, new ListItem("Foo","Bar")); //Adds to the start of the list (index 0), Text set to Foo, Value set to Bar

Posted 11-Jan-13 2:51am

Keith Barrow

Solution 4

youdropdown.insert(position,youItem);

Exemple:

dropdown1.Insert(0,new ListItem("value","Text")); insert data in a first position; dropdown1.Add(new ListItem("value","Text")); insert into a last position;

Posted 11-Jan-13 2:52am

marcio_krul

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Om Prakash Pant · Accepted Answer · 2013-01-11T02:50:00

Solution 2

after databinding, add the following:

ddlstudentname.Items.Insert(0, new ListItem("Select","NA"));

Posted 11-Jan-13 2:50am

Om Prakash Pant

Comments

Member 9511889 11-Jan-13 9:01am

thanks for your ans.i have one question.
here what is meaning of "NA".how it affect?

Om Prakash Pant 11-Jan-13 9:04am

As an example, i have added some value. "Select" is text and "NA" is value in above example.