III.4- Using OptionButton III.5- Using ListView Control

 III.4- Using OptionButton

A radio button or option button enables the user to select a single option from a group of choices when paired with other RadioButton controls. When a user clicks on a radio button, it becomes checked, and all other radio buttons with same group become unchecked.

Source Code:

private void rbtRed_CheckedChanged(object sender, EventArgs e)

        {

            if (rbtRed.Checked == true)

                lblColor.ForeColor = Color.Red;

        }

 

        private void rbtBlue_CheckedChanged(object sender, EventArgs e)

        {

            if (rbtBlue.Checked == true)

                lblColor.ForeColor = Color.Blue;

        }

 

        private void rbtYellow_CheckedChanged(object sender, EventArgs e)

        {

            if (rbtYellow.Checked == true)

                lblColor.ForeColor = Color.Yellow;

        }

    }

III.5- Using ListView Control

The ListView control is an ItemsControl that is derived from ListBox 

Source Code:

private void btnAdd_Click(object sender, EventArgs e)         {             //Declaring list item & add to listitem             ListViewItem IstIem = listView1.Items.Add(txtID.Text);               //Add Sub item             IstIem.SubItems.Add(txtName.Text);             IstIem.SubItems.Add(cboSex.Text);             clearText();         }           private void btnEdit_Click(object sender, EventArgs e)         {             int i = listView1.SelectedIndices[0];             listView1.Items[i].Text = txtID.Text;             listView1.Items[i].SubItems[1].Text = txtName.Text;             listView1.Items[i].SubItems[2].Text = cboSex.Text;             clearText();         }           private void btnDelete_Click(object sender, EventArgs e)         {             int i = listView1.SelectedIndices[0];             listView1.Items.RemoveAt(i);         }           private void listView1_SelectedIndexChanged(object sender, EventArgs e)         {             if (listView1.SelectedIndices.Count == 0)             {                 MessageBox.Show("Double click item to edit");                 return;             }             int i = listView1.SelectedIndices[0];             txtID.Text = listView1.Items[i].Text;             txtName.Text = listView1.Items[i].SubItems[1].Text;             cboSex.Text = listView1.Items[i].SubItems[2].Text;         }         //Clear text after save         private void clearText()         {             txtID.Clear();             txtName.Clear();             cboSex.SelectedIndex = -1;         }