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我創建了一個存儲過程，它搜索的輸入來GridView和其計算方法如下：GridView的搜索
Create procedure spSearch
(
@Emp_id nvarchar(50) = null,
@Emp_name nvarchar(50) = null,
@Emp_exp nvarchar(50) = null,
@Emp_address nvarchar(50) = null
)
AS
BEGIN
If @Emp_id is not null and Len(@Emp_id)=0 Set @Emp_id = null
If @Emp_name is not null and Len(@Emp_name)=0 Set @Emp_name = null
If @Emp_exp is not null and Len(@Emp_exp)=0 Set @Emp_exp = null
If @Emp_address is not null and Len(@Emp_address)=0 Set @Emp_address = null
Select *
From tbl_employee
Where
(@Emp_id is null or Emp_id Like @Emp_id)
and (@Emp_name is null or Emp_name Like @Emp_name)
and (@Emp_exp is null or Emp_exp Like @Emp_exp)
and (@Emp_address is null or Emp_address Like @Emp_address)
END
不過，這回的搜索項只有當輸入已存儲的數據完全一致。
Eg : In tbl_employee I have
Emp ID = 1
Emp_name = peter
Emp_exp = 2 years
Emp_address = xyz
只有當我輸入emp_name爲「peter」時，搜索結果纔會在gridview中填充。 我需要修改存儲過程，以便即使在文本框中輸入「pe」，也應該填充包含「pe」的所有數據。
這是C＃代碼：
private DataTable Search()
{
DataTable SearchResultsTable = new DataTable();
SqlConnection conn = new SqlConnection(System.Configuration.ConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString);
try
{
SqlCommand cmd = new SqlCommand("spSearch", conn);
cmd.CommandType = CommandType.StoredProcedure;
cmd.Parameters.AddWithValue("@Emp_id", txtEmpID.Text);
cmd.Parameters.AddWithValue("@Emp_name" , txtEmpName.Text);
cmd.Parameters.AddWithValue("@Emp_exp " , txtEmpExp.Text);
cmd.Parameters.AddWithValue("@Emp_address " , txtEmpAddress.Text);
SqlDataAdapter adapter = new SqlDataAdapter(cmd);
adapter.Fill(SearchResultsTable);
}
catch (Exception ex)
{
Response.Write(ex.ToString());
}
finally
{
if (conn != null)
{
conn.Close();
}
}
return SearchResultsTable ;
}
protected void btnSearch_Click(object sender, EventArgs e)
{
EmployeeGridView.DataSource = Search();
EmployeeGridView.DataBind();
}
}
如何修改這個讓搜索變得更加靈活。