根据 C# 中的长度更改标签文本行

Question

So I am developing an application in WinForms and I am populating data from an Access database into a Combobox . After populating it I will use the items from the Combobox to display data on my labels. This is what I have to populate data:

public void AutoCompleteBrand()
{
    OleDbConnection con = new OleDbConnection(cs.DBConn);
    con.Open();

    adapter = new OleDbDataAdapter();
    adapter.SelectCommand = new OleDbCommand(@"SELECT DISTINCT RTRIM(Phone) FROM tblPhone", con);

    ds = new DataSet("ds");
    adapter.Fill(ds);
    dtable = ds.Tables[0];
    cmbPhone.Items.Clear();

    foreach (DataRow drow in dtable.Rows)
    {
        cmbPhone.Items.Add(drow[0].ToString());
    }
}

Then inside of Combobox selected index event I will use this code:

private void cmbPhone_SelectedIndexChanged(object sender, EventArgs e)
{
    try
    {
        OleDbConnection con = new OleDbConnection(cs.DBConn);
        con.Open();

        cmd = new OleDbCommand(@"SELECT DISTINCT 
                                    Brand, Phone, Tecnology
                                    FROM tblPhone", con);
        OleDbDataAdapter mAdapter = new OleDbDataAdapter(cmd);
        DataSet mDataSet = new DataSet();
        OleDbDataReader mReader;
        mReader = cmd.ExecuteReader();

        while (mReader.Read())
        {
            string sBrand = mReader.GetString(0);
            string sPhone = mReader.GetString(1);
            string sTec = mReader.GetString(2);

            lblBrand.Text = sBrand;
            lblPhone.Text = sPhone;
            lblTec.Text = sTec;
        }
    }
    catch (Exception ex)
    {
            MessageBox.Show("Erro\nDetalhes: " + ex.Message, "Erro", MessageBoxButtons.OK, MessageBoxIcon.Error);
    }
}

Basically the technology label is too big and when it reaches a length changes line. It is doable?

Answer 1

Your question is not very clear. You are working with WPF or Winforms ?

Basicly you can try a few things like :

-If winforms, you can set the autosize property = true of your label.

you can try Something like this :

    while (mReader.Read())
    {
        string sBrand = mReader.GetString(0);
        string sPhone = mReader.GetString(1);
        string sTec = mReader.GetString(2);

        lblBrand.Text = sBrand;
        lblPhone.Text = sPhone;
        lblTec.Text = sTec;
        int wdth = sTec.Length * 16; //you can put another value depending your charachter size. 
        lblTech.Size = new Size(wdth, 22);




    }

Or if you can give a fix width to your label and you can check the length of your string to add a new line :

     int lngth = 100;
     if(sTech.Length > lngth)
     {
       sTech = sTech.SubString(0, lngth) + Environment.NewLine + sTech.SubString(lngth);
     lblTech.Text = sTech;
     }

Tell me if it works.

Answer 2

you just need to set two properties to your label: AutoSize and MaximumSize . AutoSize tells label to grow (both horizontally and vertically) but MaximumSize limits it to certain Width and Height . So. just do something like this:

label1.AutoSize = true;
label1.MaximumSize = new Size(100, 600);
label1.Text = "test string which is pretty long";