When it comes to displaying data in a Winform application, the DataGridview control is a popular choice among developers. It allows for a neat and organized presentation of data in a table-like format. However, there may be times when the data in the DataGridview exceeds the available space, resulting in the appearance of a bottom extra row. This can be quite frustrating for users, as it disrupts the overall design and can make the data difficult to read. In this article, we will explore how to hide the bottom extra row in a Winform DataGridview.
To begin, let us first understand why the extra row appears in the first place. The DataGridview control has a property called "AllowUserToAddRows", which is set to true by default. This allows the user to add new rows to the DataGridview by clicking on the last row, which is known as the "new row" or "empty row". This row is displayed at the bottom of the DataGridview, even if it is not being used to add new data. This is what we refer to as the "bottom extra row".
To hide this extra row, we need to set the "AllowUserToAddRows" property to false. This can be done either through the designer or in code. If you are using the designer, simply select the DataGridview control, go to the Properties window, and change the value of the "AllowUserToAddRows" property to false. If you prefer to do it in code, you can use the following line of code:
dataGridView1.AllowUserToAddRows = false;
By setting this property to false, the bottom extra row will no longer be displayed in the DataGridview.
However, there is one caveat to this solution. If the user has already added data to the bottom extra row, it will still be visible even after setting the "AllowUserToAddRows" property to false. To overcome this, we need to remove the empty row from the DataGridview. To do so, we can use the "Rows" property of the DataGridview and call the "RemoveAt" method, passing in the index of the last row. This can be achieved with the following code:
dataGridView1.Rows.RemoveAt(dataGridView1.Rows.Count - 1);
This will remove the empty row from the DataGridview, and the bottom extra row will no longer be displayed.
In some cases, you may want to allow the user to add new rows to the DataGridview, but you still want to hide the bottom extra row. In such scenarios, we can use a different approach. Instead of setting the "AllowUserToAddRows" property to false, we can set the "RowCount" property to a value that is one less than the actual number of rows in the DataGridview. This can be done in code as follows:
dataGridView1.RowCount = dataGridView1.Rows.Count - 1;
This will essentially hide the bottom extra row without disabling the ability to add new rows.
In conclusion, the extra row at the bottom of a Winform DataGridview can be quite bothersome for users. Fortunately, with a few simple steps, we can easily hide this row and improve the overall appearance of our application. Whether you choose to disable the "AllowUserToAddRows" property or adjust the "RowCount" property, the end result will be a clean and organized DataGridview with no extra row at the bottom.
