是不是空格问题?改成下面试试
string StrSQL = "SELECT * FROM Myuser WHERE ";
StrSQL += this.comboBox1.Text+" LIKE ";
StrSQL += this.textBox2.Text + "";
string StrSQL = "SELECT * FROM Myuser WHERE ";
StrSQL += this.comboBox1.Text+" LIKE ";
StrSQL += this.textBox2.Text + "";
string StrSQL = "SELECT* FROM Myuser WHERE ";
StrSQL += this.comboBox1.Text+" like "+;
StrSQL += " '%"+this.textBox2.Text + "%'";
StrSQL += this.comboBox1.Text+"LIKE";
StrSQL += this.textBox2.Text + "";
注意空格string StrSQL = "SELECT* FROM Myuser WHERE ";
StrSQL += this.comboBox1.Text+" LIKE ";
StrSQL += this.textBox2.Text + "";还有你的如果是整形和字符串类型 注意区分 否则会有问题