Vb.Net Datagridview date column with mask

how can set a mask dd/mm/yyyy in a date column in datagridview, like "  -  -    ". When run project in the date column not appear mask: "  -  -    "
rflorencioAsked:
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ramkihardyConnect With a Mentor Commented:
You can add a MaskedTextBox into the control collection of the DataGridView, handle the DataGridView's CellBeginEdit event to host the MaskedTextBox in the current cell, the Mask of which is set based on the cell value in the ComboBox column; handle the CellEndEdit event to update the current cell with the data in the MaskedTextBox. And we have to handle the Scroll event in order to adjust the location for the MaskedTextBox while scrolling if it's visible.

public partial class Form7 : Form

    {

        public Form7()

        {

            InitializeComponent();

        }

 

        private void Form7_Load(object sender, EventArgs e)

        {

            DataGridViewComboBoxColumn TpyeCol = new DataGridViewComboBoxColumn();

            TpyeCol.Name = "Type";

            TpyeCol.HeaderText = "Type";

            TpyeCol.Items.AddRange(new string[] { "Home Phone", "Cell", "Work", "Email" });

            this.dataGridView1.Columns.Add(TpyeCol);

 

            this.dataGridView1.Columns.Add("Description", "Description");

            this.dataGridView1.Rows.Add("Home Phone","");

 

            this.maskedTextBox = new MaskedTextBox();

            this.maskedTextBox.Visible = false;

            this.dataGridView1.Controls.Add(this.maskedTextBox);

 

            this.dataGridView1.CellBeginEdit += 

                new DataGridViewCellCancelEventHandler(dataGridView1_CellBeginEdit);

 

            this.dataGridView1.CellEndEdit += 

                new DataGridViewCellEventHandler(dataGridView1_CellEndEdit);

 

            this.dataGridView1.Scroll += new ScrollEventHandler(dataGridView1_Scroll);

        }

 

        void dataGridView1_Scroll(object sender, ScrollEventArgs e)

        {

            if (this.maskedTextBox.Visible)

            {
                //we have to adjust the location for the MaskedTextBox while scrolling

                Rectangle rect = this.dataGridView1.GetCellDisplayRectangle(

                    this.dataGridView1.CurrentCell.ColumnIndex, 

                    this.dataGridView1.CurrentCell.RowIndex, true);

                this.maskedTextBox.Location = rect.Location;

            }

        }

 

        void dataGridView1_CellBeginEdit(object sender, DataGridViewCellCancelEventArgs e)

        {

            if (e.ColumnIndex == this.dataGridView1.Columns["Description"].Index &&

                e.RowIndex < this.dataGridView1.NewRowIndex)

            {

                string type = this.dataGridView1["Type", e.RowIndex].Value.ToString();

                if (type == "Home Phone" || type == "Cell" || type == "Work")

                {

                    this.maskedTextBox.Mask = "(###)###-####";

                    Rectangle rect = 
                       this.dataGridView1.GetCellDisplayRectangle(e.ColumnIndex,e.RowIndex,true);

                    this.maskedTextBox.Location = rect.Location;

                    this.maskedTextBox.Size = rect.Size;

                    this.maskedTextBox.Text = "";

                    if (this.dataGridView1[e.ColumnIndex, e.RowIndex].Value != null)

                    {

                        this.maskedTextBox.Text = this.dataGridView1[e.ColumnIndex, 
                            e.RowIndex].Value.ToString();

                    }

                    this.maskedTextBox.Visible = true;

                }

                // if type is Email, do no show the MaskedTextBox

            }

        }

 

        void dataGridView1_CellEndEdit(object sender, DataGridViewCellEventArgs e)

        {

            if (this.maskedTextBox.Visible)

            {

                this.dataGridView1.CurrentCell.Value = this.maskedTextBox.Text;

                this.maskedTextBox.Visible = false;

            }

        }

 

        MaskedTextBox maskedTextBox;

    }

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Hope it helps...
Ramki
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