我正在尝试将文本框作为Rowfilter置于textchanged事件下!
以下代码用于GRID以获取在文本框中输入的相应Reg_Number
或 Customer_Name
!
wat的令人惊讶的事实是,此代码直接采用第二个参数
(即)
((DataTable)radGridView1.DataSource).DefaultView.RowFilter = "Reg_Number like '%" + radTextBoxControl1.Text + "%'";
尝试切换线条,但无论我做了什么,它都会忽略第一个并取得第二个
我试图把AND放在一条线上,但是不行,请告诉我frnzz!
private void radTextBoxControl1_TextChanged(object sender, EventArgs e)
{
try
{
((DataTable)radGridView1.DataSource).DefaultView.RowFilter =
"Customer_Name like '%" + radTextBoxControl1.Text + "%'";
((DataTable)radGridView1.DataSource).DefaultView.RowFilter =
"Reg_Number like '%" + radTextBoxControl1.Text + "%'";
}
catch (Exception) { }
}
答案 0 :(得分:6)
这是因为第二个作业取代了第一个作业
myDataTable.DefaultView.RowFilter = "firstFilter";
myDataTable.DefaultView.RowFilter = "secondFilter";
// Now RowFilter is "secondFilter"
您必须将2个过滤器与逻辑OR组合以获得满足以下两个条件的结果:
myDataTable.DefaultView.RowFilter = "firstFilter OR secondFilter";
var view = ((DataTable)radGridView1.DataSource).DefaultView;
string escapedText = radTextBoxControl1.Text.Replace("'", "''");
view.RowFilter = "Customer_Name LIKE '%" + escapedText + "%' OR " +
"Reg_Number LIKE '%" + escapedText + "%'";
String.Format
:
view.RowFilter = String.Format("Customer_Name LIKE '%{0}%' OR Reg_Number LIKE '%{0}%'",
escapedText);
或者,自C#7.0以来,使用字符串插值:
view.RowFilter =
$"Customer_Name LIKE '%{escapedText}%' OR Reg_Number LIKE '%{escapedText}%'";
另外,请确保用两个单引号替换单引号。这使SQL字符串能够包含引号并防止SQL注入:
SELECT * FROM myTable WHERE Name = 'Andy''s Pub';
您必须将这两个条件与OR
合并而不是AND
的原因是,用户将输入 客户名称或注册号码(我们只有一个文本框)。
或者,您可以检查条目是否格式化为注册号,并应用适当的过滤器。在伪代码中:
if (radTextBoxControl1.Text is formatted as reg_nr) {
view.RowFilter = "Reg_Number LIKE '%" + escapedText + "%'";
} else {
view.RowFilter = "Customer_Name LIKE '%" + escapedText + "%'";
}
答案 1 :(得分:2)
这应该有效:
((DataTable)radGridView1.DataSource).DefaultView.RowFilter =
"Customer_Name like '%" + radTextBoxControl1.Text + "%' AND Reg_Number like '%" + radTextBoxControl1.Text + "%'";
答案 2 :(得分:1)
我认为你需要OR操作而不是AND "Customer_Name like '%" + radTextBoxControl1.Text + "%' OR Reg_Number like '%" + radTextBoxControl1.Text + "%'";