C# 停止SelectedValueChanged事件
我只是想问一下如何停止代码中的selected value changed事件。我已经选择了ValueChanged事件和SelectedIndexChanged事件。我使用SelectedIndexChanged事件是因为要在我的gridview中查找任何重复项以便您理解,以下是我的代码 SelectedValueChanged代码:C# 停止SelectedValueChanged事件,c#,events,handler,C#,Events,Handler,我只是想问一下如何停止代码中的selected value changed事件。我已经选择了ValueChanged事件和SelectedIndexChanged事件。我使用SelectedIndexChanged事件是因为要在我的gridview中查找任何重复项以便您理解,以下是我的代码 SelectedValueChanged代码: private void cmbField_SelectedValueChanged(object sender, EventArgs e) {
private void cmbField_SelectedValueChanged(object sender, EventArgs e)
{
DataGridViewRow GridRowLoc = this.dgvFilter.CurrentRow;
AddGrid(iRowIdx);
int iRowCount = this.dgvFilter.RowCount - 1;
if (this.cmbField.Text != "System.Data.DataRowView")
{
this.dgvFilter.Rows[iRowIdx].Cells["ColumnFieldName"].Value = this.cmbField.Text;
this.dgvFilter.Rows[iRowIdx].Cells["FieldName"].Value = this.cmbField.SelectedValue;
if (iRowCount <= iRowIdx)
{
DataRow drow = dttable.NewRow();
drow["ColumnNames"] = this.cmbField.Text;
drow["FieldName"] = this.cmbField.SelectedValue;
drow["Alias"] = string.Empty;
drow["DataType"] = string.Empty;
drow["Outputs"] = false;
drow["SortType"] = string.Empty;
drow["SortOrder"] = string.Empty;
drow["GroupBy"] = string.Empty;
drow["Filter"] = string.Empty;
drow["Or1"] = string.Empty;
drow["Or2"] = string.Empty;
drow["Or3"] = string.Empty;
drow["Or4"] = string.Empty;
drow["Or5"] = string.Empty;
drow["Or6"] = string.Empty;
drow["Or7"] = string.Empty;
drow["Or8"] = string.Empty;
drow["Or9"] = string.Empty;
drow["Or10"] = string.Empty;
dttable.Rows.Add(drow);
}
else
{
int irow = 0;
foreach (DataRow dr in dttable.Rows)
{
if (irow == iRowIdx)
{
dr["ColumnNames"] = this.cmbField.Text;
dr["FieldName"] = this.cmbField.SelectedValue;
}
irow++;
}
}
CheckAlias(iRowIdx, this.cmbField.Text, dgvFilter);
checkcellvalue(this.cmbField.Text, iRowIdx);
CheckSorting();
if (bGroupBySelected == true)
{
this.dgvFilter.Rows[iRowIdx].Cells["GroupBy"].Value = "Group By";
}
this.dgvFilter.DataSource = dttable;
dsFilter.AcceptChanges();
this.cmbField.Visible = false;
}
//checkcellvalue(this.cmbField.Text, iRowIdx);
//MessageBox.Show(arr_Filter[0]);
CheckoutputEnable();
}
private void cmbField_SelectedIndexChanged(object sender, EventArgs e)
{
try
{
if (dgvFilter.Rows.Count > 1)
{
int count = this.dgvFilter.Rows.Count;
DataRowView oDataRowView = cmbField.SelectedItem as DataRowView;
string sValue = string.Empty;
if (oDataRowView != null)
{
sValue = oDataRowView.Row["FieldDescription"] as string;
}
for (int j = 0; j < count; j++)
{
sValue = this.cmbField.Text;
if ((j + 2) != dgvFilter.Rows.Count)
{
if ((sValue == this.dgvFilter.Rows[j].Cells["ColumnFieldName"].Value.ToString()))
{
if (this.dgvFilter.Rows.Count > 2)
{
MessageBox.Show("Field already in the list");
DataGridViewRow GridRowLoc2 = this.dgvFilter.CurrentRow;
this.dgvFilter.Rows.Remove(GridRowLoc2);
break;
}
}
}
}
}
}
catch (Exception ex)
{
}
}
每次都是密码
DataGridViewRow GridRowLoc2=this.dgvFilter.CurrentRow;
this.dgvFilter.Rows.RemoveGridRowLoc2;
执行SelectedValueChanged执行到的事件。。我只想停止SelectedValueChangedEvent,因为我的代码太复杂,所以很难解释。简单地删除事件处理程序怎么样 只要做:
if (<whatever>)
{
this.cmbField.SelectedValueChanged -= cmbField_SelectedValueChanged;
}
如果不需要,为什么不删除SelectedValueChangedEvent?@dbugger无法删除我需要SelectedValueChanged事件来确定组合框中的值。
private void LoadComboField()
{
ReadXMLData(XMLDOC, dsCombo);
dt = dsCombo.Tables[0];
DataView dv1 = new DataView(dsCombo.Tables[0]);
this.cmbField.Items.Clear();
this.cmbField.DataSource = dv1;
this.cmbField.DisplayMember = "FieldDescription";
this.cmbField.ValueMember = "FieldName";
}
if (<whatever>)
{
this.cmbField.SelectedValueChanged -= cmbField_SelectedValueChanged;
}