数据加载时不触发Datagridview组合框和Textbox事件
数据加载时不触发Datagridview组合框和Textbox事件
提问于 2018-11-16 05:58:25
我正在创建一个应用程序，其中datagridview具有一个组合框和多个文本框。
在datagridview中，当我选择手动datagridviewcombobox值时，将填充文本框值。
但是datagridview由bindingsource填充，datagridviewcombobox的值被选中，而textbox值为空。
示例，如下面所示
由用户选择的组合框值，帐户名称文本框已填充
由bindingsource(动态)选择的组合框值，帐户名称textbox为空
下面的是我的代码
int journalID = 0;
public Add(int id = 0)
{
BindControls();
journalID = id;
}
private async void BindControls()
{
try
{
if (journalID > 0)
{
List<JournalAccountViewModel> list = await new JournalModel().GetDetailById(journalID);
for (int i = 0; i <= list.Count - 1; i++)
{
bindingSource1.Add(list[i]);
}
}
else
{
bindingSource1.Add(new JournalAccountViewModel());
bindingSource1.List.Clear();
}
dgvJournal.AutoGenerateColumns = false;
dgvJournal.AllowUserToAddRows = true;
dgvJournal.AutoSize = true;
dgvJournal.DataSource = bindingSource1;
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, "Rule", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
private void dgvJournal_EditingControlShowing(object sender, DataGridViewEditingControlShowingEventArgs e)
{
try
{
if (dgvJournal.CurrentCell.ColumnIndex == dgvJournal.Columns[colCredit.Name].Index) //Desired Column
{
TextBox tb = e.Control as TextBox;
if (tb != null)
{
tb.KeyPress += new KeyPressEventHandler(txtNumeri_KeyPress);
}
}
if (dgvJournal.CurrentCell.ColumnIndex == dgvJournal.Columns[ColDebit.Name].Index) //Desired Column
{
TextBox tb = e.Control as TextBox;
if (tb != null)
{
tb.KeyPress += new KeyPressEventHandler(txtNumeri_KeyPress);
}
}
ComboBox combo = e.Control as ComboBox;
if (combo != null)
{
combo.SelectedIndexChanged -= new EventHandler(ComboBox_SelectedIndexChanged);
combo.SelectedIndexChanged += new EventHandler(ComboBox_SelectedIndexChanged);
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, "Rule", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
private void ComboBox_SelectedIndexChanged(object sender, EventArgs e)
{
try
{
if (((ComboBox)sender).SelectedItem != null)
{
AccountViewModel account = (AccountViewModel)((ComboBox)sender).SelectedItem;
var currentcell = dgvJournal.CurrentCellAddress;
DataGridViewTextBoxCell cel = (DataGridViewTextBoxCell)dgvJournal.Rows[currentcell.Y].Cells[ColAccountName.Name];
cel.Value = account.Name;
}
else
{
((ComboBox)sender).SelectedIndex = 0;
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, "Rule", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
private void txtNumeri_KeyPress(object sender, KeyPressEventArgs e)
{
try
{
if (!char.IsControl(e.KeyChar) && !char.IsDigit(e.KeyChar) && e.KeyChar != '.')
{
e.Handled = true;
}
// only allow one decimal point
if (e.KeyChar == '.' && (sender as TextBox).Text.IndexOf('.') > -1)
{
e.Handled = true;
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, "Rule", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}当组合框值按程序设置时，请建议如何填充文本框值。
回答 2
Stack Overflow用户
回答已采纳
发布于 2018-11-19 04:29:08
private void dgvJournal_DataBindingComplete(object sender, DataGridViewBindingCompleteEventArgs e)
{
if (e.ListChangedType == ListChangedType.Reset)
{
var a = (DataGridView)sender;
var b = a.DataSource;
var c = (BindingSource)b;
var d = c.List;
int sumDebit = 0, sumCredit = 0;
int cnt = 0;
foreach (JournalAccountViewModel account in d)
{
dgvJournal.Rows[cnt].Cells[ColAccountName.Name].Value = accountList.Where(acc => acc.ID == account.AccountID).FirstOrDefault().Name;
enableCell(((DataGridViewCell)dgvJournal.Rows[cnt].Cells[ColDebit.Name]), (account.Debit > 0));
enableCell(((DataGridViewCell)dgvJournal.Rows[cnt].Cells[colCredit.Name]), (account.Credit > 0));
cnt++;
}
}
}Stack Overflow用户
发布于 2018-11-16 22:45:56
我将为该CellValueChanged创建一个DataGridView事件，并从ComboBox_SelectedIndexChanged事件中复制该功能。这将消除在dgvJournal_EditingControlShowing中设置这些事件的需要，并解决您的原始问题，因为它将在AccountNumber字段中任何值发生更改时触发。
private void dgvJournal_CellValueChanged(object sender, DataGridViewCellEventArgs e)
{
int accountNumberColIndex = dgvJournal.Columns["AccountNumber"].Index;
// Checking that this value is from the account number column
if (e.ColumnIndex == accountNumberColIndex)
{
AccountViewModel account = (AccountViewModel) dgvJournal.Rows[e.RowIndex].Cells[e.ColumnIndex].Value;
int accountNameColIndex = dgvJournal.Columns["AccountName"].Index;
DataGridViewTextBoxCell accountNameCell = (DataGridViewTextBoxCell) dgvJournal.Rows[e.RowIndex].Cells[accountNameColIndex];
accountNameCell.Value = account.Name;
}
}页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/53332237
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