How to set first value of combo box to 'Select Option'

Question

1.80/5 (2 votes)

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I am using the following code to populate a combobox, but i want 'Select Option' Value at first index of combobox.

C#

string strConn = "Data Source=SEZSW08;Initial Catalog=Nidhi;Integrated Security=True";
        SqlConnection Con = new SqlConnection(strConn);
        Con.Open();
        string strCmd = "select companyName from companyinfo where CompanyName='" + cmbCompName.SelectedValue + "';";
        SqlCommand Cmd = new SqlCommand(strCmd, Con);
        SqlDataAdapter da = new SqlDataAdapter(strCmd, Con);
        DataSet ds = new DataSet();
        Con.Close();
        da.Fill(ds);
        cmbCompName.DataSource = ds;
        cmbCompName.DisplayMember = "CompanyName";
        cmbCompName.ValueMember = "CompanyName";
        //cmbCompName.DataBind();
        cmbCompName.Enabled = true;

I shall be thankful for your help.
Usama

Posted 27-Jul-13 23:56pm

osama.javed

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4 solutions

Solution 2

Try this:

C#

if(cmbCompName.Items.Count > 0)
{
  //You can set using SelectedIndex
  cmbCompName.SelectedIndex= 0;
}

Posted 28-Jul-13 0:14am

Kuthuparakkal

Comments

[no name] 28-Jul-13 17:05pm

5!

Solution 4

You needed just the below high lighted three lines. You are done. :omg:

C#

string strConn = "Data Source=SEZSW08;Initial Catalog=Nidhi;Integrated Security=True";
        SqlConnection Con = new SqlConnection(strConn);
        Con.Open();
        string strCmd = "select companyName from companyinfo where CompanyName='" + cmbCompName.SelectedValue + "';";
        SqlCommand Cmd = new SqlCommand(strCmd, Con);
        SqlDataAdapter da = new SqlDataAdapter(strCmd, Con);
        DataTable ds = new DataTable();
        Con.Close();
        da.Fill(ds);
        DataRow dr = ds.NewRow();//Created new row 
        dr("companyName ") = "Select option";//Added required text
        ds.Rows.InsertAt(dr, 0);//Added at first position
        cmbCompName.DataSource = ds;       
        cmbCompName.DataBind();

Regards..:laugh:

Posted 28-Jul-13 2:17am

Thanks7872

Updated 1-Aug-13 20:52pm

v2

Solution 1

C#

cmbCompName.SelectedText = "your value";
or
cmbCompName.SelectedIndex = 0;

Posted 28-Jul-13 0:14am

jiji2663

Updated 28-Jul-13 0:17am

v3

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ridoy · Accepted Answer · 2013-07-28T00:18:00

Solution 3

Use..

C#

cmbCompName.Insert(0,"Select Option");

Or,

C#

cmbCompName.Items.Insert(0, new ListItem("-Select Option-", "0"));

Or,
In form load event write something like..

C#

cmbCompName.Text = "Select Option";

And in the TextChanged event of the comboBox write the following code..

C#

private void cmbCompName_TextChanged(object sender, EventArgs e)
       {
           if (cmbCompName.SelectedIndex < 0)
           {
               cmbCompName.Text = "Select Option";
           }
           else
           {
               cmbCompName.Text = cmbCompName.SelectedText;
           }
       }

Posted 28-Jul-13 0:18am

ridoy

Updated 28-Jul-13 0:24am

v3

Comments

osama.javed 28-Jul-13 8:51am

I have done this
cmbCompName.Text = "Select Option";
private void cmbCompName_TextChanged(object sender, EventArgs e)
{
if (cmbCompName.SelectedIndex < 0)
{
cmbCompName.Text = "Select Option";
}
else
{
cmbCompName.Text = cmbCompName.SelectedText;
}
}
but on pageload, it does not shows the 'select option' value

ridoy 28-Jul-13 9:00am

read carefully,in your page load event just write cmbCompName.Text = "Select Option"; and then in textchanged event of comobox write the rest of code.If still not then try other 2 alternative solution above.

Joezer BH 28-Jul-13 9:42am

5ed

ridoy 28-Jul-13 9:55am

Thanks Maimonides :)