private void UpdateSource(object newSource)
{
if (this.sourceView != null)
{
this.sourceView.CollectionChanging -= this.SourceCollectionChanging;
this.sourceView.CollectionChanged -= this.SourceCollectionChanged;
}
this.sourceView = DataSourceViewFacotry.CreateDataSourceView(newSource ?? Enumerable.Empty <object>());
this.sourceView.CollectionChanging += this.SourceCollectionChanging;
this.sourceView.CollectionChanged += this.SourceCollectionChanged;
}
/// <summary>
/// This function can be called from View to bind <see cref="IDataSourceView{T}"/> with <see cref="DataSource{T}"/> on the ViewModel side.
/// </summary>
/// <typeparam name="T">T type shared between <see cref="IDataSourceView{T}"/> and <see cref="DataSource{T}"/></typeparam>
/// <param name="dataSourceView">Control which can visualize <see cref="DataSource{T}"/>.</param>
/// <param name="dataSource">Source of data - some T collection.</param>
/// <returns>Value indicating whether you bind successfully.</returns>
public bool BindToDataSource <T>(IDataSourceView <T> dataSourceView, DataSource <T> dataSource)
{
try
{
dataSourceView.Bind(dataSource);
return(true);
}
catch (Exception e)
{
this.Log("Exception occur during data source binding: " + e, LogLevel.Error);
return(false);
}
}
// Отменить поиск. Обработка события нажатия на кнопку.
private void tbSearchCancel_Click(object sender, EventArgs e)
{
IDataSourceView students = this.ActiveMdiChild as DataViewForm <IStudent>;
IDataSourceView companies = this.ActiveMdiChild as DataViewForm <ICompany>;
IDataSourceView form = students ?? companies;
if (form == null)
{
return;
}
form.SetDataSourceFilter(null);
}
// Поиск. Обработка события нажатия на кнопку.
private void btnSearch_Click(object sender, EventArgs e)
{
IDataSourceView students = this.ActiveMdiChild as DataViewForm <IStudent>;
IDataSourceView companies = this.ActiveMdiChild as DataViewForm <ICompany>;
IDataSourceView form = students ?? companies;
if (form == null)
{
return;
}
var filter = students == null ? $"([Название] LIKE '%{tbSearch.Text}%')" : BuildStudentSearchString();
form.SetDataSourceFilter(filter);
}
private static string[] GetData(string prefixText, int count, bool isKz, bool isCode, IDataSourceView dataSourse, string value)
{
if (!dataSourse.CheckPermit())
{
//todo: log
return(null);
}
var reslut = new List <string>(count);
var jss = new JavaScriptSerializer();
if (dataSourse.SupportSelectICodeRow)
{
var queryable = dataSourse.GetSelectICodeRow(GlobalObject.decodeURIComponent(value));
if (isKz)
{
queryable = isCode
? queryable.Where(q => q.code.StartsWith(prefixText)).Take(count)
: queryable.Where(q => q.nameKz.StartsWith(prefixText)).Take(count);
foreach (var row in queryable)
{
reslut.Add(jss.Serialize(new Pair(isCode ? row.code : row.nameKz, new Pair(isCode ? row.nameKz : row.code, row.id))));
}
}
else
{
queryable = isCode
? queryable.Where(q => q.code.StartsWith(prefixText)).Take(count)
: queryable.Where(q => q.nameRu.StartsWith(prefixText)).Take(count);
foreach (var row in queryable)
{
reslut.Add(jss.Serialize(new Pair(isCode ? row.code : row.nameRu, new Pair(isCode ? row.nameRu : row.code, row.id))));
}
}
}
else
{
var queryable = dataSourse.GetSelectIRow(GlobalObject.decodeURIComponent(value));
if (isKz)
{
queryable = queryable.Where(q => q.nameKz.StartsWith(prefixText)).Take(count);
foreach (var row in queryable)
{
reslut.Add(jss.Serialize(new Pair(row.nameKz, new Pair("", row.id))));
}
}
else
{
queryable = queryable.Where(q => q.nameRu.StartsWith(prefixText)).Take(count);
foreach (var row in queryable)
{
reslut.Add(jss.Serialize(new Pair(row.nameRu, new Pair("", row.id))));
}
}
}
return(reslut.ToArray());
}
