How to Add a New Row to Datagridview Programmatically

How to add a new row to datagridview programmatically

You can do:

DataGridViewRow row = (DataGridViewRow)yourDataGridView.Rows[0].Clone();
row.Cells[0].Value = "XYZ";
row.Cells[1].Value = 50.2;
yourDataGridView.Rows.Add(row);

or:

DataGridViewRow row = (DataGridViewRow)yourDataGridView.Rows[0].Clone();
row.Cells["Column2"].Value = "XYZ";
row.Cells["Column6"].Value = 50.2;
yourDataGridView.Rows.Add(row);

Another way:

this.dataGridView1.Rows.Add("five", "six", "seven","eight");
this.dataGridView1.Rows.Insert(0, "one", "two", "three", "four");

From: http://msdn.microsoft.com/en-us/library/system.windows.forms.datagridview.rows.aspx

How to add new row to datagridview?

When you set the DataSource property to null, you are essentially removing all data from the DataGridView (since it doesn't know what to bind to anymore).

You have two options here. The first is to update the underlying data source. Let's assume that it's a DataTable. In this case, you'd do something like:

DataTable dt = dataGridView1.Source as DataTable;
dt.Rows.Add(new object[] { ... });

And then the DataGridView will pick up on the changes (note that if you are not binding to something that doesn't implement the INotifyCollectionChanged interface, you'll have to call the ResetBindings method to get the grid to refresh).

The other option is to let the DataGridView manage the rows. You can do this by manually adding each item using the Add method on the DataGridViewRowCollection returned by the Rows property:

foreach (var item in source)
{
    dataGridView1.Rows.Add("1", "2", "3", ...);
}

I wouldn't say the second solution is optimal, but it will work.

Finally, assuming you are binding to a DataTable (or some other materialization of the data from an underlying data source), this doesn't do anything about to updating underlying data source (that would be a separate question).

Add new row to DataGridView C#

if you have no datasource, then you can go the following way:

  int rowIndex = dataGridView1.Rows.Add();
  dataGridView1[0, rowIndex].Value = "value1"; // 0 for first column
  dataGridView1[1, rowIndex].Value = "value2"; // 1 for second column
  rowIndex = dataGridView1.Rows.Add();
  dataGridView1[0, rowIndex].Value = "value3";
  dataGridView1[1, rowIndex].Value = "value4";

in your code it should be:

// dataGridView2.ColumnCount = 4;  
int w = 0;
foreach (var item in tInArr)
{...
  w = dataGridView2.Rows.Add();
  dataGridView2[0, w].Value = muTat3.ToString();
  dataGridView2[1, w].Value = item.ToString();
  ....
  //w++; this is not required
}

Adding rows on datagridview manually

You can pass an object array that contains the values which should be inserted into the DataGridView in the order how the columns are added. For instance you could use this:

dataGridView1.Rows.Add(new object[] { true, "string1" });
dataGridView1.Rows.Add(new object[] { false, "string2" });

And you can build object array from whatever you want, just be sure to match the type (i.e. use bool for checkedColumn)

How to programmatically add a row to a datagridview when it is data-bound?

Add a row to the datatable, the datagridview will update automatically:

DataTable dt = myDataGridView.DataSource as DataTable;
//Create the new row
DataRow row = dt.NewRow();

//Populate the row with data

//Add the row to data table
dt.Rows.Add(row);

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