I\'ve inserted a checkbox column and textbox column on the datagridview. how can add rows manually on the textbox column.
It should be like this:
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You can use the Rows collection to manually populate a DataGridView control instead of binding it to a data source.
this.dataGridView1.Rows.Add("five", "six", "seven", "eight");
this.dataGridView1.Rows.Insert(0, "one", "two", "three", "four");
Take a look at the documentation
And you can do something like this too:
DataGridViewRow row = (DataGridViewRow)yourDataGridView.Rows[0].Clone();
row.Cells["Column2"].Value = "XYZ";
row.Cells["Column6"].Value = 50.2;
yourDataGridView.Rows.Add(row);
See this answer