Я полагаю, что проблема уже решена, но я добавлю свое решение, чтобы помочь другим, сталкивающимся с такой же проблемой, связанной с проверкой нескольких полей:
Я создал несколько переменных pubilc для хранения, допустим ли ввод:
public bool validation1_valid = true;
public bool validation2_valid = true;
Затем в методе DataGrid _CellValueChanged
:
private void gridView_CellValueChanged(object sender, DataGridViewCellEventArgs e)
{
string cellHeader = gridView.Columns[e.ColumnIndex].HeaderText.ToString();
//if cell is one that needs validating
if (cellHeader == "Something" || cellHeader == "Something Else")
{
//if it isn't null/empty
if (gridView.Rows[e.RowIndex].Cells[e.ColumnIndex].Value != null
&& gridView.Rows[e.RowIndex].Cells[e.ColumnIndex].Value.ToString() != "")
{
//check if it's valid (here using REGEX to check if it's a number)
if (System.Text.RegularExpressions.Regex.IsMatch(gridView.Rows[e.RowIndex].Cells[e.ColumnIndex].Value.ToString(), @"^(?:^\d+$|)$"))
{
//set the relevant boolean if the value to true if the cell it passes validation
switch (cellHeader)
{
case "Something":
validation1_valid= true;
break;
case "Something Else":
validation2_valid= true;
break;
}
//Add an error text
gridView.Columns[e.ColumnIndex].DefaultCellStyle.ForeColor = Color.Black;
gridView.Rows[e.RowIndex].Cells[e.ColumnIndex].ErrorText = String.Empty;
gridView.Rows[e.RowIndex].ErrorText = String.Empty;
//DON'T disable the button here - it will get changed every time the validation is called
}
else //doesn't pass validation
{
//set boolean to false
switch (cellHeader)
{
case "Something":
validation1_valid = false;
break;
case "Something Else":
validation2_valid = false;
break;
}
gridView.Columns[e.ColumnIndex].DefaultCellStyle.ForeColor = Color.Red;
gridView.Rows[e.RowIndex].Cells[e.ColumnIndex].ErrorText = "Value must be numeric.";
}
}
else //null or empty - I'm allowing these, so set error to "" and booleans to true
{
switch (cellHeader)
{
case "Something":
validation1_valid = true;
break;
case "Something Else":
validation2_valid = true;
break;
}
gridView.Columns[e.ColumnIndex].DefaultCellStyle.ForeColor = Color.Black;
gridView.Rows[e.RowIndex].Cells[e.ColumnIndex].ErrorText = String.Empty;
gridView.Rows[e.RowIndex].ErrorText = String.Empty;
}
}
//if there is an invalid field somewhere
if (validation1_valid == false || validation2_valid == false)
{
//set the button to false, and add an error to the row
btnSave.Enabled = false;
gridView.Rows[e.RowIndex].ErrorText = "There are validation errors.";
}
//else if they're all vaild
else if (validation1_valid == true && validation2_valid == true)
{
//set the button to true, and remove the error from the row
btnSave.Enabled = true;
gridView.Rows[e.RowIndex].ErrorText = String.Empty;
}
}