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我有一個dataGrid在我的app.I使用TextChanged事件來過濾數據grid.I有四個文本框用於過濾。我正在使用SQL查詢與LIKE 。 當我只用兩個文本框使用過濾器時,此方法工作正常。但如果我使用三個(四個)(因爲我需要四個),它不會過濾數據網格right.It不顯示所有匹配,並且當我清除文本框時,它不會重置dataGrid以顯示整個表格。dataGrid搜索與SQL LIKE查詢不工作,因爲它應該
我的XAML:
<DataGrid x:Name="dataGridSearch" HorizontalAlignment="Center" VerticalAlignment="Top" Height="227" Width="990" Margin="0,202,0,0" ItemsSource="{Binding DataSource}" AutoGenerateColumns="False" IsReadOnly="True">
<DataGrid.Columns>
<DataGridTextColumn Header="Name" Binding="{Binding name}" Width="200" />
<DataGridTextColumn Header="Type" Binding="{Binding type}" Width="300"/>
<DataGridTextColumn Header="City" Binding="{Binding city}" Width="250" />
<DataGridTextColumn Header="Place" Binding="{Binding place}" Width="*" />
</DataGrid.Columns>
</DataGrid>
我對TextChanged事件代碼:
using (SqlConnection sc = new SqlConnection(ConString))
{
sc.Open();
string query_search = "SELECT * FROM object WHERE name LIKE @name AND type LIKE @type AND city LIKE @city AND place LIKE @place";
SqlCommand com = new SqlCommand(query_search, sc);
com.Parameters.AddWithValue("@name", "%" + textBoxPlace.Text + "%");
com.Parameters.AddWithValue("@type", "%" + textBoxType.Text + "%");
com.Parameters.AddWithValue("@city", "%" + textBoxCity.Text + "%");
com.Parameters.AddWithValue("@place", "%" + textBoxPlace.Text + "%");
using (SqlDataAdapter adapter = new SqlDataAdapter(com))
{
DataTable dt = new DataTable();
adapter.Fill(dt);
dataGridSearch.ItemsSource = dt.DefaultView;
}
sc.Close();
}
此外,在窗的打開,我有在開始填充DataGrid中的一個方法
public void fillGrid()
{
using (SqlConnection sc = new SqlConnection(ConString))
{
sc.Open();
string query = "SELECT * FROM object";
SqlCommand com = new SqlCommand(query, sc);
using (SqlDataAdapter adapter = new SqlDataAdapter(com))
{
DataTable dt = new DataTable();
adapter.Fill(dt);
adapter.Update(dt);
// dataGridSvi.AutoGenerateColumns = false;
dataGridSearch.ItemsSource = dt.DefaultView;
}
sc.Close();
}
}
這僅僅是爲stackoverfow question.I錯字都有了正確的進入在我的code.sorry的typo.also它看起來像來自數據庫的一些領域,它工作正常。但對於一些它不 – Alexander
好吧,如果你用'按鈕'做它?不是'textchange事件'?你能發表確切的代碼嗎? – Noah