/// <summary>
/// Builds the filter expression and raises the FilterExpressionBuilding event
/// </summary>
/// <param name="sender">The event source.</param>
/// <param name="e">The <see cref="System.ComponentModel.CancelEventArgs"/> userPermissions containing the event data.</param>
/// <remarks>
/// Override <b>OnFilterExpressionBuilding</b> to provide a filter expression construction
/// logic and to set the values of the <see cref="DgvBaseColumnFilter.FilterExpression"/> and <see cref="DgvBaseColumnFilter.FilterCaption"/> properties.
/// The <see cref="DgvFilterManager"/> will use these properties in constructing the whole filter expression and to change the header text of the filtered column.
/// Otherwise, you can create an event handler and set the <i>Cancel</i> ctl of event argument to true, to skip standard filter expression building logic.
/// </remarks>
protected override void OnFilterExpressionBuilding(object sender, CancelEventArgs e)
{
base.OnFilterExpressionBuilding(sender, e);
if (e.Cancel)
{
FilterManager.RebuildFilter();
return;
}
FilterResult filterResult = new FilterResult();
filterResult.Caption = this.OriginalDataGridViewColumnHeaderText;
if (this.checkBoxSelectNull.Checked)
{
filterResult.Expression = GetNullCondition(this.DataGridViewColumn.DataPropertyName);
filterResult.Caption += "\n= Ø";
}
if (this._checkedItems.Count > 0)
{
if (!String.IsNullOrEmpty(filterResult.Expression))
filterResult.Expression += " OR ";
filterResult.Expression += this.DataGridViewColumn.DataPropertyName + " IN (";
}
Int32 i = 0;
foreach (String filter in this._checkedItems)
{
if (!String.IsNullOrEmpty(filter))
filterResult = this.ApplyFilter(filterResult, filter, i);
i++;
}
if (this._checkedItems.Count > 0)
filterResult.Expression += filterResult.Expression.Substring(0, filterResult.Expression.Length - 1) + ")";
if (i > this.MaxCaptionItems)
filterResult.Caption += "\n...";
if (!String.IsNullOrEmpty(filterResult.Expression))
{
FilterExpression = filterResult.Expression;
FilterCaption = filterResult.Caption;
FilterManager.RebuildFilter();
}
else
{
FilterManager.ActivateFilter(false, this.DataGridViewColumn.Index);
}
}
/// <summary>
/// Builds the filter expression and raises the FilterExpressionBuilding event
/// </summary>
/// <param name="sender">The event source.</param>
/// <param name="e">The <see cref="System.ComponentModel.CancelEventArgs"/> userPermissions containing the event data.</param>
/// <remarks>
/// Override <b>OnFilterExpressionBuilding</b> to provide a filter expression construction
/// logic and to set the values of the <see cref="DgvBaseColumnFilter.FilterExpression"/> and <see cref="DgvBaseColumnFilter.FilterCaption"/> properties.
/// The <see cref="DgvFilterManager"/> will use these properties in constructing the whole filter expression and to change the header text of the filtered column.
/// Otherwise, you can create an event handler and set the <i>Cancel</i> ctl of event argument to true, to skip standard filter expression building logic.
/// </remarks>
protected override void OnFilterExpressionBuilding(object sender, CancelEventArgs e)
{
base.OnFilterExpressionBuilding(sender, e);
if (e.Cancel)
{
FilterManager.RebuildFilter();
return;
}
FilterResult filterResult = new FilterResult();
filterResult.Caption = this.OriginalDataGridViewColumnHeaderText;
if (this.checkBoxSelectNull.Checked)
{
filterResult.Expression = GetNullCondition(this.DataGridViewColumn.DataPropertyName);
filterResult.Caption += "\n= Ø";
}
if (this._checkedItems.Count > 0)
{
if (!String.IsNullOrEmpty(filterResult.Expression))
{
filterResult.Expression += " OR ";
}
filterResult.Expression += this.DataGridViewColumn.DataPropertyName + " IN (";
}
Int32 i = 0;
foreach (String filter in this._checkedItems)
{
if (!String.IsNullOrEmpty(filter))
{
filterResult = this.ApplyFilter(filterResult, filter, i);
}
i++;
}
if (this._checkedItems.Count > 0)
{
filterResult.Expression += filterResult.Expression.Substring(0, filterResult.Expression.Length - 1) + ")";
}
if (i > this.MaxCaptionItems)
{
filterResult.Caption += "\n...";
}
if (!String.IsNullOrEmpty(filterResult.Expression))
{
FilterExpression = filterResult.Expression;
FilterCaption = filterResult.Caption;
FilterManager.RebuildFilter();
}
else
{
FilterManager.ActivateFilter(false, this.DataGridViewColumn.Index);
}
}
/// <summary>
/// TODO: Documentation ApplyFilter
/// </summary>
/// <param name="filterResult"></param>
/// <param name="filterText"></param>
/// <returns></returns>
private FilterResult ApplyFilter(FilterResult filterResult, String filterText, Int32 index)
{
if (index < this.MaxCaptionItems)
filterResult.Caption += "\n";
if (ColumnDataType == typeof(String))
{
// Managing the string-column case
String escapedFilterValue = DgvBaseColumnFilter.StringEscape(filterText.ToString());
filterResult.Expression = String.Format(CultureInfo.CurrentCulture,
"{0}'{1}',",
filterResult.Expression,
escapedFilterValue);
if (index < this.MaxCaptionItems)
filterResult.Caption = String.Format(CultureInfo.CurrentCulture,
"{0}= {1}",
filterResult.Caption,
filterText);
}
else
{
// Managing the other cases
String formattedValue = DgvBaseColumnFilter.FormatValue(filterText, this.ColumnDataType);
if (!String.IsNullOrEmpty(formattedValue))
{
filterResult.Expression = String.Format(CultureInfo.CurrentCulture,
"{0}{1},",
filterResult.Expression,
formattedValue);
if (index < this.MaxCaptionItems)
filterResult.Caption = String.Format(CultureInfo.CurrentCulture,
"{0}= {1}",
filterResult.Caption,
filterText);
}
}
return filterResult;
}
/// <summary>
/// Builds the filter expression and raises the FilterExpressionBuilding event
/// </summary>
/// <param name="sender">The event source.</param>
/// <param name="e">The <see cref="System.ComponentModel.CancelEventArgs"/> userPermissions containing the event data.</param>
/// <remarks>
/// Override <b>OnFilterExpressionBuilding</b> to provide a filter expression construction
/// logic and to set the values of the <see cref="DgvBaseColumnFilter.FilterExpression"/> and <see cref="DgvBaseColumnFilter.FilterCaption"/> properties.
/// The <see cref="DgvFilterManager"/> will use these properties in constructing the whole filter expression and to change the header text of the filtered column.
/// Otherwise, you can create an event handler and set the <i>Cancel</i> ctl of event argument to true, to skip standard filter expression building logic.
/// </remarks>
protected override void OnFilterExpressionBuilding(object sender, CancelEventArgs e)
{
base.OnFilterExpressionBuilding(sender, e);
if (e.Cancel)
{
this.FilterManager.RebuildFilter();
return;
}
String resultFilterCaption = this.OriginalDataGridViewColumnHeaderText + "\n";
String resultFilterExpression = String.Empty;
// Managing the NULL and NOT NULL cases which are entityType-independent
if (this.comboBoxOperator.Text == "= Ø")
{
resultFilterExpression = DgvBaseColumnFilter.GetNullCondition(this.DataGridViewColumn.DataPropertyName);
}
if (this.comboBoxOperator.Text == "<> Ø")
{
resultFilterExpression = DgvBaseColumnFilter.GetNotNullCondition(this.DataGridViewColumn.DataPropertyName);
}
if (!String.IsNullOrEmpty(resultFilterExpression))
{
this.FilterExpression = resultFilterExpression;
this.FilterCaption = resultFilterCaption + "\n" + this.comboBoxOperator.Text;
this.FilterManager.RebuildFilter();
return;
}
FilterResult filterResult = new FilterResult();
filterResult = this.ApplyFilter(filterResult,
this.comboBoxOperator,
this.textBoxValue.Text,
null);
foreach (FilterComponents filter in this._filters)
{
if (!String.IsNullOrEmpty(filter.TextBoxValue.Text))
{
filterResult = this.ApplyFilter(filterResult,
filter.ComboBoxOperator,
filter.TextBoxValue.Text,
filter.ComboBoxAndOr.Text);
}
}
resultFilterExpression = filterResult.Expression;
resultFilterCaption += filterResult.Caption;
if (!String.IsNullOrEmpty(resultFilterExpression))
{
this.FilterExpression = resultFilterExpression;
this.FilterCaption = resultFilterCaption;
this.FilterManager.RebuildFilter();
}
}
