set country code as default value in a textbox in c#

Bineesh Viswanath

13y4.4kC#

Sir I am doing a error prone project at the moment.

I have a comboBox and a textbox.

the combobox stands for coutry list and textbox for phone number.

when i select a country from the combobox list, i need that country's code to be enter automatically to the taxtbox.
also the value entered in the textbox doesn't be removed when i enter phone number in it

please help me on this topic

4 Replies

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Iftikar Hussain13y ago
Accepted answer
Hi,
You can do like below
private void Form10_Load(object sender, EventArgs e)
{

// Create a List to store our KeyValuePairs
List> data = new List>();

// Add data to the List
data.Add(new KeyValuePair("91", "India"));
data.Add(new KeyValuePair("92", "Pakistan"));
data.Add(new KeyValuePair("93", "Sri Lanka"));

// Clear the combobox
comboBox1.DataSource = null;
comboBox1.Items.Clear();

// Bind the combobox
comboBox1.DataSource = new BindingSource(data, null);
comboBox1.DisplayMember = "Value";
comboBox1.ValueMember = "Key";
}

private void comboBox1_SelectedIndexChanged(object sender, EventArgs e)
{
// Get the selected item in the combobox
KeyValuePair selectedPair = (KeyValuePair)comboBox1.SelectedItem;

// Show selected information on screen
textBox1.Text = selectedPair.Key;
}

Regards,
Iftikar
Sanjeeb Lenka13y ago
hello check this code:

bind your combo box like this

SqlConnection con = new SqlConnection("your connection string");
SqlCommand cmd = new SqlCommand("select Countrycode,Countryname from countrytable", con);
SqlDataAdapter da = new SqlDataAdapter(cmd);
DataSet ds = new DataSet();
da.Fill(ds);
comboBox1.ValueMember = "Countrycode";
comboBox1.DisplayMember = "Countryname";
comboBox1.DataSource = ds.Tables[0];

then in comboBox1_SelectedIndexChanged event write the below code

private void comboBox1_SelectedIndexChanged(object sender, EventArgs e)
        {
            textBox1.Text = comboBox1.SelectedValue.ToString();
        }

any problem reply
Bineesh Viswanath13y ago
No My project is windows form.

the possible contents you given is not a relation with my project
Iftikar Hussain13y ago
Hi,
Are you trying to do this in WebApplication or WindowsApplication?

Regards,
Iftikar