In Windows Forms, I want to add row by row into DataGridView on button click event by taking the values from other controls. I am using DataTable in this case and it is bound to DataGridView.
I am using the following code and it is working fine when the data is inserted for the first time. But my problem is when I click the button for the second time, the first row is overwritten with the second row of data.
private void btnAddToGrid_Click(object sender, EventArgs e)
{
LoadDataGridView();
}
private void LoadDataGridView()
{
dgvAdjustment.DataSource = GetAdjustmentTable();
}
private DataTable GetAdjustmentTable()
{
DataTable adjustmentTable = new DataTable();
DataColumn dataColumn;
dataColumn = new DataColumn("SourceOutletID", typeof(int));
adjustmentTable.Columns.Add(dataColumn);
dataColumn = new DataColumn("DestinationOutletID", typeof(int));
adjustmentTable.Columns.Add(dataColumn);
dataColumn = new DataColumn("TransactionDate", typeof(DateTime));
adjustmentTable.Columns.Add(dataColumn);
dataColumn = new DataColumn("MaterialName", typeof(string));
adjustmentTable.Columns.Add(dataColumn);
dataColumn = new DataColumn("AdjustmentType", typeof(int));
adjustmentTable.Columns.Add(dataColumn);
dataColumn = new DataColumn("CurrentBalance", typeof(decimal));
adjustmentTable.Columns.Add(dataColumn);
dataColumn = new DataColumn("AdjustmentQty", typeof(decimal));
adjustmentTable.Columns.Add(dataColumn);
dataColumn = new DataColumn("NewBalance", typeof(decimal));
adjustmentTable.Columns.Add(dataColumn);
DataRow dataRow = adjustmentTable.NewRow();
dataRow[0] = cmbSourceOutlet.SelectedValue;
dataRow[1] = cmbDestinationOutlet.SelectedValue;
dataRow[2] = TransDateTimePicker.Value;
dataRow[3] = cmbMaterialName.SelectedValue;
dataRow[4] = cmbAdjustmentType.SelectedValue;
dataRow[5] = Convert.ToDecimal(lblCurBalVal.Text);
dataRow[6] = Convert.ToDecimal(lblAdjVal.Text);
dataRow[7] = Convert.ToDecimal(lblNewQtyVal.Text);
int insertPosition = adjustmentTable.Rows.Count;
adjustmentTable.Rows.InsertAt(dataRow, insertPosition);
return adjustmentTable;
}
In ASP .NET applications, I use the session state to check whether DataTable is null by using the following code:
protected void Button1_Click(object sender, EventArgs e)
{
try
{
//Check if previous session is exist
if (Session["MyTable"] == null)
{
dtMyTable = new DataTable("MyTable");
dtMyTable.Columns.Add("Id", typeof(int));
dtMyTable.Columns.Add("LName", typeof(string));
}
else
{
//If yes then get it from current session
dtMyTable = (DataTable)Session["MyTable"];
}
//Add new row every time
DataRow dt_row;
dt_row = dtMyTable.NewRow();
dt_row["Id"] = TextBox1.Text;
dt_row["LName"] = TextBox2.Text;
dtMyTable.Rows.Add(dt_row);
//Update session table
Session["MyTable"] = dtMyTable;
}
catch (Exception ex)
{
Response.Write(ex.Message);
}
}
What can I do and how can I make the changes to get the right solution in Windows Forms? Any help will be much appreciated!